VXM 104BCD Narrow Wide MTB Chainring 32T–42T CNC Aluminum 1x
VXM 104BCD Narrow Wide MTB Chainring 32T–42T CNC Aluminum 1x
VXM 104BCD Narrow Wide MTB Chainring – CNC Aluminum 1x Single Chainring
Upgrade your mountain bike drivetrain with the VXM 104BCD Narrow Wide Chainring. Precision CNC-machined from high-grade aluminum alloy, this single chainring delivers exceptional chain retention, reduced weight, and long-lasting durability on every trail. Available in 32T, 34T, 36T, 38T, 40T, and 42T tooth options to suit your riding style and terrain.
Key Features
- Narrow-Wide Tooth Profile: Alternating narrow and wide teeth engage chain inner and outer links for superior chain retention — no front derailleur needed.
- CNC Precision Machined: Aircraft-grade aluminum alloy construction ensures a lightweight yet robust chainring with tight tolerances for smooth, consistent shifting.
- 104 BCD Compatibility: Standard 4-bolt 104mm Bolt Circle Diameter fits most MTB cranks and cranksets widely available on the market.
- 1x Drivetrain Ready: Purpose-built for single chainring (1x) setups, simplifying your drivetrain and reducing mechanical complexity on the trail.
- Multiple Tooth Options: Choose from 32T, 34T, 36T, 38T, 40T, or 42T to dial in your ideal gear ratio for climbing, descending, or all-around trail riding.
- Anodized Finish: Hard-anodized surface resists scratches, corrosion, and trail grime for a long-lasting clean look.
Specifications
| Material | Aluminum Alloy (CNC Machined) |
| BCD | 104mm (4-Bolt) |
| Tooth Counts | 32T / 34T / 36T / 38T / 40T / 42T |
| Tooth Profile | Narrow-Wide |
| Drivetrain | 1x Single Chainring |
| Chain Compatibility | 6–12 Speed Chains |
| Country of Origin | Made in China |
Who Is This For?
Whether you're a trail rider, enduro enthusiast, or a daily MTB commuter, the VXM Narrow Wide Chainring is the perfect 1x upgrade. Its reliable chain retention means you can focus on the trail ahead without worrying about dropped chains. Pair it with your favorite rear derailleur and cassette for a clean, efficient drivetrain build.
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Frequently Asked Questions
Q: What crank arms are compatible with this 104BCD chainring?
A: This VXM 104BCD chainring fits most standard mountain bike cranks that use a 4-bolt, 104mm Bolt Circle Diameter (BCD) pattern. This is one of the most common MTB crank standards, compatible with brands such as Shimano, FSA, Race Face, and many others. Always confirm your crank's BCD before purchasing.
Q: What is a narrow-wide chainring and why does it matter?
A: A narrow-wide chainring features alternating tooth widths — one narrow tooth followed by one wide tooth — that perfectly match the inner and outer chain link widths. This design dramatically improves chain retention on rough terrain, making it ideal for 1x (single chainring) drivetrain setups where there is no front derailleur to guide the chain.
Q: Which tooth count (T) should I choose for my riding style?
A: Lower tooth counts (32T, 34T) are better suited for technical climbs and steep terrain where lower gearing helps. Higher tooth counts (38T, 40T, 42T) are ideal for faster, flatter trails or riders who prefer higher top-end speed. A 36T is a popular all-around choice for mixed trail riding.
Q: Is this chainring compatible with both 9-speed and 12-speed chains?
A: Yes, the narrow-wide tooth profile on the VXM chainring is designed to work with a wide range of chain speeds, generally from 6-speed up to 12-speed chains. For best performance, pair with a quality chain that matches your rear cassette speed rating.