Bonneville/Thruxton (Air-Cooled) 45T Rear Sprocket (525 chain) PN MBI-B525T45
BikeMaster® Sprockets are meticulously engineered using the highest quality materials and industry leading technology to provide the best replacement sprockets for your motorcycle.
This top-condition 45T rear sprocket is heat treated for extended durability 45 tooth rear sprocket for air cooled Triumph Bonneville, Scrambler, and Thruxton models.
Changing the number of teeth on a sprocket changes the final drive ratio of the bike.
For installation, follow the instructions in your service manual.