Headsets

- Steel cup semi-integrated design - Alloy top cap with hollow bolt allows for brake cable pass-through - Caged bearing 5/32" x 22A - ED Black durable finish - SHIS: ZS44/28.6|ZS44/30 - Steerer OD: 28.6mm - Cup: 44mm - Race: 30mm - Stack Height: 9.4mm

Smoothness, longevity and reliability make Campagnolo's Record Threaded Headset the choice of champions. It's the perfect upgrade for your favorite classic steed with a 1-inch, threaded fork.

Cane Creek's AngleSet transforms your ride. It enables an effective head-tube angle adjustment of up to +/- 1.5-degrees so you can fine-tune your mountain bike's front-end handling to best suit your riding style, local terrain and race course. Installation is straightforward because the AngleSet automatically adjust to fit different head tube lengths and angles. All AngleSet headsets have light, tough, and beautiful machined 7075 T6-aluminum cups with Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out.

Cane Creek's 10 Series has light, tough, and beautiful machined 6061 T6-aluminum cups, Cane Creek's corrosion-resistant black-oxide angular-contact bearings and quality seals throughout to keep the grease in and the dirt out. • Technical Description: IS52/40/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 52.1mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Polymer • Bottom Stack Height: 1mm • Bottom Bearing Type: Black Oxide • Material: N/A • Weight: 35.35g

Cane Creek's Aheadset is a simple, affordable solution for your headset needs. • Bearing Type: Cup and Cone • Color: Black • Crown Race: 30 • Defined Color: Black • Lower Stack Height: 12 mm • S.H.I.S Lower: EC34 • S.H.I.S Upper: EC34 • S.H.I.S. Stem Clamp Diameter: 28.6 • Upper Stack Height: 18 mm • Weight: 165 g

Cane Creek's 10 Series has light, tough, and beautiful machined 6061 T6-aluminum cups, Cane Creek's corrosion-resistant black-oxide angular-contact bearings and quality seals throughout to keep the grease in and the dirt out. • Technical Description: ZS44/28.6/H8/K|ZS44/30/H4/K • Top Type: ZS - ZeroStack • Top Head Tube Inside Dia.: 44.00mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm (Short), 15mm (Tall) • Top Bearing Type: Black Oxide • Material: 6061 aluminum • Weight: 62.79g

Cane Creek's 10 Series has light, tough, and beautiful machined 6061 T6-aluminum cups, Cane Creek's corrosion-resistant black-oxide angular-contact bearings and quality seals throughout to keep the grease in and the dirt out. • Technical Description: ZS56/40/H4/K • Bottom Type: ZS - ZeroStack • Bottom Head Tube Inside Dia.: 55.95mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Polymer • Bottom Stack Height: 4mm • Bottom Bearing Type: Black Oxide • Material: 6061 aluminum • Weight: 35.35g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: IS52/30/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 52.1mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 1mm • Bottom Bearing Type: Black Oxide, Sealed • Material: N/A • Weight: 72g

This is the Integrated Bottom Bearing for the Cane Creek 40 Series headset. Please contact us if you have any questions about which parts are correct for your headset.

Cane Creek's Aheadset is a simple, affordable solution for your headset needs. • Bearing Type: Cup and Cone • Color: Black • Crown Race: 30 • Defined Color: Black • Lower Stack Height: 5 mm • S.H.I.S Lower: ZS44 • S.H.I.S Upper: ZS44 • S.H.I.S. Stem Clamp Diameter: 28.6 • Upper Stack Height: 10 mm • Weight: 130 g

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Zero stack uppers press into head tube with very little stack height. Zero stack cups press into the head tube with very little stack height. - Sealed black oxide bearings - Steel crown race with integrated seals - Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: IS41/28.6/H9/K • Top Type: IS - Integrated • Top Head Tube Inside Dia.: 41.1mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 9mm (Short), 15mm (Tall) • Top Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 37g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: IS42/28.6/H9/K|IS42/30/H1 • Top Type: IS - Integrated • Top Head Tube Inside Dia.: 42.00mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 9mm (Short), 15mm (Tall) • Top Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 72g

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Zero stack uppers press into head tube with very little stack height. Zero stack cups press into the head tube with very little stack height. - Sealed black oxide bearings - Steel crown race with integrated seals

This is the Top Cover for the Cane Creek 40 Series ZeroStack headset. Please contact us if you have any questions about which parts are correct for your headset.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: EC44/40/H12/K • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 44.00mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 12mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 65g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 10 Series has light, tough and beautiful machined 6061 T6-aluminum cups, Cane Creek's corrosion-resistant black-oxide angular-contact bearings and quality seals throughout to keep the grease in and the dirt out.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. • Technical Description: IS41/30/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 41.1mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Aluminum, Dual-Seal • Bottom Stack Height: 1mm • Bottom Bearing Type: Top-quality, sealed stainless steel bearings • Weight: 24.91g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: EC49/40/H12/K • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 49.61mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 12mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 76g

This is the Bottom External Cup for the Cane Creek 40 Series headset. Please contact us if you have any questions about which parts are correct for your headset.

This is the Bottom for the Cane Creek 40 Series ZeroStack headset. Please contact us if you have any questions about which parts are correct for your headset.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS56/30/H4/K • Bottom Type: ZS - ZeroStack • Bottom Head Tube Inside Dia.: 55.95mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 4mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 88g

Cane Creek's 10 Series has light, tough, and beautiful machined 6061 T6-aluminum cups, Cane Creek's corrosion-resistant black-oxide angular-contact bearings and quality seals throughout to keep the grease in and the dirt out. • Technical Description: EC34/28.6/H16/K|EC34/30 /H12/K • Top Type: EC - External Cup • Top Head Tube Inside Dia.: 33.95mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 16mm • Top Bearing Type: Black Oxide • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 33.95mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Polymer • Bottom Stack Height: 12mm • Bottom Bearing Type: Black Oxide • Material: 6061 aluminum • Weight: 88.29g

Cane Creek 40 EC Headset Lowers - Compatible with tapered 1-1/8" to 1-1/4" steerer tubes

The AER headset lower is a great choice for road and mountain bike applications- a high-quality durable headset lower with durability and lightweight performance in mind. - Steel/Aluminum hybrid bearings

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

Hellbender 70 Slam Top Assembly headset.

The AER headset upper is a great choice for road and mountain bike applications- a high quality durable headset upper with durability and lightweight performance in mind. - Steel/Aluminum hybrid bearings

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. • Technical Description: IS52/30/H1 • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 52.1mm • Crown Race Seat Dia.: 30.015mm • Crown Race Type: Aluminum, Dual-Seal • Bottom Stack Height: 1mm • Bottom Bearing Type: Top-quality, sealed stainless steel bearings • Weight: 45.25g

This is the Integrated Bottom Bearing for the Cane Creek 110 Series headset. Please contact us if you have any questions about which parts are correct for your headset.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: IS41/28.6/H9/K|IS52/40/H1 • Top Type: IS - Integrated • Top Head Tube Inside Dia.: 41.1mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 9mm (Short), 15mm (Tall) • Top Bearing Type: Black Oxide, Sealed • Bottom Type: IS - Integrated • Bottom Head Tube Inside Dia.: 52.1mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 1mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 87g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Integrated bearings fit directly into compatible head tubes without the need of a bearing press. - Sealed black oxide bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - Steel crown race with integrated seals - Interlok spacer compatible - Uses 36/45 degree crown race and compression ring - Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability, and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Integrated bearings fit directly into compatible head tubes without the need of a bearing press. - Sealed black oxide bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - Steel crown race with integrated seals - Interlok spacer compatible - Uses 36/45 degree crown race and compression ring - Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. - Technical Description: EC34/30/H12/x - Bottom Type: EC - External Cup - Bottom Head Tube Inside Dia.: 33.95mm - Crown Race Seat Dia.: 30.015mm - Crown Race Type: Aluminum, Dual-Seal - Bottom Stack Height: 12mm - Bottom Bearing Type: Top-quality, sealed stainless steel bearings - Material: 7075 aluminum - Weight: 42.20g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS44/28.6/H8/K|ZS56/30/H4/K • Top Type: ZS - Zero Stack Cup • Top Head Tube Inside Dia.: 44.00mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm • Top Bearing Type: Black Oxide, Sealed • Bottom Type: ZS - ZeroStack • Bottom Head Tube Inside Dia.: 55.95mm • Crown Race Seat Dia.: 20.015mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 4mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 97g

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS44/28.6/H8/K|ZS56/40/H4/K • Top Type: ZS - ZeroStack • Top Head Tube Inside Dia.: 44.00mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm • Top Bearing Type: Black Oxide, Sealed • Bottom Type: ZS - ZeroStack • Bottom Head Tube Inside Dia.: 55.95mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 4mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum • Weight: 109g

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup. - Sealed black oxide bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - Steel crown race with integrated seals - Interlok spacer compatible - Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. • Technical Description: EC44/40/H12/x • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 44.00mm • Crown Race Seat Dia.: 39.76mm • Crown Race Type: Aluminum, Dual-Seal • Bottom Stack Height: 12mm • Bottom Bearing Type: Top-quality, sealed stainless steel bearings • Material: 7075 aluminum • Weight: 61.02g

This is the Bottom External Cup for the Cane Creek 110 Series headset. Please contact us if you have any questions about which parts are correct for your headset.

This is the Bottom for the Cane Creek 110 Series ZeroStack headset. Please contact us if you have any questions about which parts are correct for your headset. - For 1.5-inch crown race diameter - Stack height: 4mm - 54 grams

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 headsets. Technical Description: ZS56/30/H4/x Bottom Type: ZS - ZeroStack Bottom Head Tube Inside Dia.: 55.95mm Crown Race Seat Dia.: 30.015mm Crown Race Type: Aluminum, Dual-Seal Bottom Stack Height: 4mm Bottom Bearing Type: Top-quality, sealed stainless steel bearings Material: 7075 aluminum Weight: 61.34g Part Number: BAA0156x

The 40-Series is the workhorse of Cane Creek's headset line-up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long-lasting headset. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup. - Sealed black oxide bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - Steel crown race with integrated seals - Interlok spacer compatible - Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 40-Series headsets. • Technical Description: ZS44/28.6|EC44/40 • Top Type: ZS - ZeroStack • Top Head Tube Inside Dia.: 44.0mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 8mm • Top Bearing Type: Black Oxide, Sealed • Bottom Type: EC - External Cup • Bottom Head Tube Inside Dia.: 44.0mm • Crown Race Seat Dia.: 39.79mm • Crown Race Type: Steel, Face-Sealed • Bottom Stack Height: 12mm • Bottom Bearing Type: Black Oxide, Sealed • Material: 6061 aluminum

Cane Creek headsets with Hellbender stainless steel bearings with increased sealing elements and more grease in relation to the comparable 110 bearing. - Designed to bridge the gap between the 40-series and 110-series headsets

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 Series headsets. • Technical Description: EC34/28.6/H16/x • Top Type: EC - External Cup • Top Head Tube Inside Dia.: 34mm • Stem Clamp Dia.: 28.6mm • Top Stack Height: 16mm • Top Bearing Type: Top-quality, sealed stainless steel bearings • Material: 7075 aluminum • Weight: 55.26g

This is the Short Top Cover for the Cane Creek 110 Series ZeroStack headset. Please contact us if you have any questions about which parts are correct for your headset. - For 1 1/8-inch fork/headset - Stack height: 8mm - 53 grams

Hellbender 70 Lite headset.

Hellbender 70 Slam headset.

The Absolute Best Well over a decade ago, we set out to make the best premium headset on the market. With our 110 Series, we did just that, utilizing optimal materials, the most effective seals and the best aesthetics. With the flexibility to purchase complete assemblies or separate Tops and Bottoms, tops are available in either short (9mm) or tall (15mm) stack height bearing covers, the 110-Series offers a premium solution for nearly all straight and tapered configurations on the market today. From Integrated (IS) Tops to External Cup (EC) Conversion Bottoms and everything in between, you can mix and match your headset purchase to best meet your needs. - Technical Description: 110-Series IS41/28.6/H9 | IS52/40 - Top Type: IS - Integrated - Top Head Tube Inside Dia.: 41.1mm - Stem Clamp Dia.: 28.6mm - Top Stack Height: 9mm - Top Bearing Type: Top-quality, sealed stainless steel bearings - Bottom Type: IS - Integrated - Bottom Head Tube Inside Dia.: 52.1mm - Crown Race Seat Dia.: 39.79mm - Crown Race Type: Aluminum, Dual-Seal - Bottom Stack Height: 1mm - Bottom Bearing Type: Top-quality, sealed stainless steel bearings - Material: N/A - Weight: 79.48 grams

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 110 Series has light, tough, and beautiful machined 7075 T6-aluminum cups that are contoured and relieved for even more gram shaving and strength. You also get top-quality split-lip sealed stainless-steel bearings, a carbon-friendly captured compression ring and a dual-sealed crown race and complete upper bearing seal to keep the grease in and the dirt out. What's more, the seals are low-friction to improve steering performance and there are no loose headset parts so maintenance is easy. The 110 comes with an amazing 110-year, no-questions-asked warranty too!

Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Integrated bearings fit directly into compatible head tubes without the need of a bearing press. - Sealed stainless steel bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - 7075 T-6 aluminum cups machined in Fletcher, NC - Aluminum dual seal crown race protects lower bearing - Interlok spacer compatible - 110 year warranty

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 110 Series has light, tough, and beautiful machined 7075 T6-aluminum cups that are contoured and relieved for even more gram shaving and strength. You also get top-quality split-lip sealed stainless-steel bearings, a carbon-friendly captured compression ring and a dual-sealed crown race and complete upper bearing seal to keep the grease in and the dirt out. What's more, the seals are low-friction to improve steering performance and there are no loose headset parts so maintenance is easy. The 110 comes with an amazing 110-year, no-questions-asked warranty too!

Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup. - Sealed stainless steel bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - 7075 T-6 aluminum cups machined in Fletcher, NC - Aluminum dual seal crown race protects lower bearing - Interlok spacer compatible - 110 year warranty

Backed by a 110-year warranty and constructed in Fletcher, NC, the 110-Series headset is designed with no compromises in quality, durability, or finish quality. Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup. - Sealed stainless steel bearings - Carbon-friendy compression ring captured in top cover, keeping shims in place - 7075 T-6 aluminum cups machined in Fletcher, NC - Aluminum dual seal crown race protects lower bearing - Interlok spacer compatible - 110 year warrranty

Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek's 110 Series headsets. This is a tapered headset intended for forks that require a 44mm top headtube diameter, and a 56mm bottom headtube diameter. T - Technical Description: ZS44/28.6/H8/K|ZS44/30/H4/x - Top Type: ZS - ZeroStack - Top Head Tube Inside Dia.: 44.00mm - Stem Clamp Dia.: 28.6mm - Top Stack Height: 8mm - Top Bearing Type: Top-quality, sealed stainless steel bearings - Bottom Type: ZS - ZeroStack - Bottom Head Tube Inside Dia.: 55.95mm - Crown Race Seat Dia.: 39.79mm - Crown Race Type: Aluminum, Dual-Seal - Bottom Stack Height: 4mm - Bottom Bearing Type: Top-quality, sealed stainless steel bearings - Material: 7075 aluminum - Weight: 88.47g