Dope Lightweight Aluminum Chain Ring 104 BCD 40T 42T Narrow Wide Round Chain Ring For Mountain Bike And Single Speed CNC Machined Replacement Part For AM And XC Cranksets

Lightweight 104 BCD Aluminum Chainring 40T/42T for MTB
✔️ Single chainring, aluminium alloy, CNC precision, 104mm BCD, 40T or 42T

This lightweight aluminium chainring is a replacement component for mountain bikes, commonly used on AM/XC setups with Shimano-compatible cranks. It’s designed to upgrade or repair a bike’s drivetrain while keeping weight down for long rides.

✅ Weight: 99-115 g
✅ Material: aluminium alloy, CNC machined for durability
✅ Size: 104mm BCD, 40T or 42T options; fits SHIMANO cranksets for AM/XC
✅ Tooth design: narrow-wide for improved chain grip
✅ Includes: 1 x chainring

💡 What is a 104 BCD chainring with 40T and 42T used for in mountain biking and single-speed setups?

Here's a handy overview to help you decide if this part fits your ride.

- Handy upgrade for AM/XC Shimano cranksets to improve chain engagement
- Narrow-wide tooth design increases grip and reduces chain drop
- Lightweight aluminium alloy with CNC machining keeps weight down
- Choose 40T or 42T to match your gearing needs