Shimano Dura-Ace BB7710 Octalink bottom bracket

The Shimano BB7710 is designed for double-chainring road bike cranksets; the track version is particularly sturdy and comes with a complete cartridge. This bottom bracket is very well sealed, making it ideal for use on classic road bikes for road riding. Compatible with Shimano road bike Octalink cranksets.

Shimano DURA ACE Octalink technology:

• Oversize bottom bracket axle, 22 mm, CrMo steel
• Octalink, 8-tooth spline
• Sealed ball bearings
• Installation without adjustment
• Weight: approx. 255 grams
• Installation width 68 mm
• BSA thread, 34 mm x 24 tpi / 1.375" x 1.06 mm
• Recommended tool: TL-UN74-S

BSA threaded road bottom bracket cups

The BSA road bike bottom bracket cups have a width of 68 mm and a thread of 1.375 × 24 TPI, with an outer diameter of 33.6–33.9 mm, into which the bearing cups are screwed. Both bearing cups are screwed in the direction of travel.

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com