Rennen Decimal Chainring-4-Bolt 104 BCD standard

Rennen chainrings at J&R Bicycles are precission machined from aircraft quality 7075-T6 aluminum (83% stronger than the 6061 many brands use) Rennen chainrings are 3/16" thick and are made for the stress of the top BMX racers and conditions. Only Rennen offers a single speed specific tooth profile that is designed to last longer and keep chains on.

SPECIFICATION

• MATERIAL: U.S.A. Made 7000 Series Aluminum and CNC machined, specifically shaped teeth to last longer
• FIT: 4-Bolt bolt pattern for 104mm spiders
• CHAIN FIT: 3/32" or 1/8"
• BOLT REQUIREMENT: Typically uses long chainring bolt for most cranks/spiders
• CRANK REQUIREMENT: Any crank with 4-Bolt spider
• 3.9oz/110g (42T)