The PG 1170 cassette offers gearing options needed for challenging climbs

so that your child will always settle into the lowest part of the saddle and stay in place

Compatible with all Cateye computers EXCEPT: CC-TR310TW

CLAMP HEIGHT: 107cm to 178cm

Includes TR25 security bolts and tool

SRAM DUB BSA External Threaded Bottom Bracket - BSA Threaded - 68-73mm Shell - 28.99mm DUB Wide Do Not Ship Internationally The PG 1170 cassette offersSRAM DUB bottom brackets are where stiffness meets durability. SRAM has made it incredibly simple by integrating the relationship between chainring, crank, spindle and bottom bracket and provide a single replacement for 30mm and 24mm BB spindles options. SRAM has created a simple bottom bracket solution that provides better drivetrain performance, increased durability and stiffness without introducing a new frame shell standard to the industry. DUB