ACROS Blocklock Headset Upper Part 135° - 1 1/8 Inches - ZS44/28,6 - black

The semi-integrated ACROS Headset Upper Part  integrates the innovative Block Lock steering limiter system (steering angle: 135°) to prevent frame damage due to handlebar or fork impacts. Cutouts in the upper cup guide a pin on the headset top cap and mechanically limit the steering. The impact forces at the steering limits are reduced by elastomer bumpers to increase the grade of protection. The Block Lock steering limiter is especially suited for super-light and delicate carbon frames. 

Features of the ZS44 Blocklock Headset Upper Part

• compatible with all forks with 1 1/8" steerer (28,6mm) top
• for 44mm head tube at the top
• Blocklock - steering limiter angle at 135°
• double sealed angular contact ball bearings
• Stainless steel bearings
• Centering ring made of fiberglass-reinforced plastic with vulcanized-on seal