104Mm BCD Round Oval Bike Chainring 30T 32T 34T 36T 38T 40T 42T Narrow Wide Aluminum 7075 Lightweight CNC Machined For 7 8 9 10 11 12 Speed MTB Ebike Trail DH XC All Mountain Fat Bike Trail Ready Beefy
✔️ 104mm BCD chainring, 30-42T, 7075 aluminum, CNC finish
This 104mm BCD chainring is CNC machined from 7075 aluminum to offer a lightweight, stiff front ring for 1x setups. It's designed to fit 104 BCD cranksets from Shimano and IXF, including M391, M430, M590, M610, M615, M670, M780, M980, M640, and M820. Perfect for MTB, trail, XC, and e-bike builds needing a beefier, reliable front ring with Narrow Wide teeth. It ships as a single chainring with 4 bolts in black finish.
✅ 104mm BCD compatibility with Shimano M391/M430/M590/M610/M615/M670/M780/M980 and IXF 104 BCD cranks
✅ 30-42T sizes; weight typically 40-70g for 30-38T range
✅ 7075 aluminum, CNC machined for precision and finish
✅ Narrow Wide tooth design for better chain retention and self-cleaning
✅ 1x front ring setup; supports 7-12 speed cassettes
✅ Includes 4 pairs steel bolts; color Round Black
✅ 1 year warranty
💡 What is a 104mm BCD chainring used for in a 1x MTB setup?
It's a handy upgrade to simplify front gearing while keeping wide cassette options.
- Handy for converting a multi-ring front setup to a single ring system- Fits 104 BCD cranks including common Shimano and IXF models
- Keeps chain line stable with Narrow Wide teeth and CNC precision
- Supports 7-12 speed rear cassettes for MTB, XC, and trail bikes