Jet BMX 4 Bolt Race Chainring 22.2mm S&M have been hard at

S&M have been hard at work revising their original race stem

After an independent lab test the Box One M35 and Box Two M30 came out on top in terms of stiffness compared to anything else on the market

FRAME MATERIAL: 6061 Aluminum

using cold-forged 6066-T6 alloy and utilizing all the modern elements from previous levers

6cm/Glove width 16

Jet BMX 4 Bolt Race Chainring 22.2mm S&M have been hard atTough and affordable 4 bolt BMX race chainring from Jet. Fits any crank with a 4 bolt spider. Made from 4140 steel for maximum durability and minimal flex. ###section### Product Specs TYPE: Chainring 4 Bolt MATERIAL: Steel WEIGHT: 160g