JT Sprockets Steel Rear Sprocket 520 Pitch Honda Grom CBR Swaps PARTS. P Some pre-heating to the engine

Some pre-heating to the engine case or freezing of the crank may be required to aid installation

Performance race head used in conjunction with 138cc-141cc big bore kit

1000 RPM Torque Spring:  high-tension compression spring eliminates belt slip and provides consistent back-shifting during hill climbs

Length: 14 in

Fitment: Biltwell grips are available in 1”

JT Sprockets Steel Rear Sprocket 520 Pitch Honda Grom CBR Swaps PARTS. P Some pre-heating to the engineJT aftermarket rear sprocket for Honda Grom 125 (2014 2021) with CBR 250cc or 300cc engine swaps! There's no other way to counter balance your engine power other than transmission adjustments! Affordable and easy to install rear sprocket for Honda Grom 125! This sprocket will only fit Honda Grom's with CBR 250cc or 300cc engine swap, 520 pitch These sprockets would fit directly onto the OEM Honda Grom rear Hub carriers and would accept 520 pitch