Shimano Dura-Ace BB7700 Octalink bottom bracket

The Shimano BB7700 for double-chainring road bike cranksets, the high-end version with rollers and ball bearings. Compatible only 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 and roller bearings
• Installation without adjustment
• Weight: 145 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