RaceFace Narrow Wide Chainring: 104mm BCD 38t Red color-silver They are designed for Shimano

They are designed for Shimano Dura-Ace 9100 Ultegra 8000 & 105 R7000 4-bolt cranks only

Accommodates a range of chain line measurements and chainring sizes

Genuine sheep skin leather

}Paul Component Engineering Chain Keeper 28

RaceFace Narrow Wide Chainring: 104mm BCD 38t Red color-silver They are designed for ShimanoRaceFace Narrow Wide Chainring: 104mm BCD 38t Red. RaceFace Narrow Wide Chainrings feature tooth profiling for chain retention and a blend of weight and durability suitable for XC DH and everything in between. 7075 T6 aluminum aerospace grade strength Compatible with 9 10 11 and 12 speed Stiff 4mm plate thickness and I beam construction transfer loads without flexing Reversible laser etched graphics TECH SPECS Tooth Count 38 Ring Position Type Chain