Shimano 105 BB5500 Octalink bottom bracket

The Shimano BB5500 for double road bike cranksets. Compatible with Shimano road bike cranksets featuring the Octalink mount

BSA threaded road bottom bracket shell

The BSA road bike bottom bracket shells have a width of 68 mm and a 1.370 × 24 TPI thread, 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.

Shimano 105 Octalink BB5500 technology:

• Oversize bottom bracket axle, 22 mm, steel
• Octalink, 8-tooth spline, for road bike cranksets only
• Sealed ball bearings
• Installation without adjustment
• Weight: 240 grams
• Mounting width: 68 mm
• BSA thread, 34 mm x 24 tpi / 1.375" x 1.06 mm
• Recommended tool: TL-UN74-S

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