Sinz 104BCD Chainring-4-Bolt Gear Size:42T Use: Rear specific with braking

Use: Rear specific with braking surface

NOTE: The 1 1/8" to 1" Step-Down headset allows you to use a 1" fork and stem on a frame with a 1 1/8" integrated headtube

Seated rollers for high speed sprints

Barcode 031013 Special Shipping Group N/A decorateTable('product-attribute-specs-table')

More importantly

Sinz 104BCD Chainring-4-Bolt Gear Size:42T Use: Rear specific with brakingThe Sinz 104BCD Chainring 4 Bolt is the perfect match for your Sinz Elite 2 pc crank. This sprocket is ready for you to lay down some big power on your cranks. A new sprocket will only allow the teeth to move smoothly on the chain and eliminate any unnecessary noise. Being it is so light weighted on both the bike, and the wallet it must be time to make an adjustment today or maybe get an old BMX bike back into a great riding condition? Material: 6000