Zen 144 NJS Chain Ring With Header 49T Half Inch By One Eighth Inch Silver Anodized PCD 144mm 5.7 Inch Track Racing Ring For KEIRIN Style Bikes World Cup Pro Use

144mm PCD 49T Chain Ring for KEIRIN Track Bikes
✔️ Silver anodized NJS grade 49T chain ring, 1/2 x 1/8, 144mm PCD

This product is a 49T chain ring with a 144 mm PCD and a 1/2 in x 1/8 in chain size, finished in silver anodized for long wear. It is intended for KEIRIN style track racing and pro use.

✅ PCD: 144 mm (5.7 in)
✅ Chain size: 1/2 in x 1/8 in
✅ Surface finish: Silver anodized, NJS certified
✅ Teeth: 49T
✅ Color: Silver

💡 What is a chain ring used for in KEIRIN style track bikes?

This handy piece helps transfer pedal motion to the chain, driving the rear wheel on a track bike.

- Front gear for track racing setups - Works with 1/2 x 1/8 inch chains - KEIRIN style racing with NJS anodized finish