New
ALUGEAR Round 1x Shimano GRX Chainring 38 50T Narrow Wide
Price:
€80.00
Tax included
Ultra-light GRX single chainring: just 60–99 g depending on size. CNC-machined 7075-T6 aluminium with Narrow Wide teeth for secure chain retention. Fits Shimano GRX RX600, RX610, RX810 and RX820 cranksets in 1x11s or 1x12s setups.
Chainring
ALUGEAR Round 1x GRX: minimum weight, secure chain retention
With its open-spoke design, this ALUGEAR chainring focuses on low weight for 1x Gravel drivetrains. It is CNC-machined from 7075-T6 aluminium, anodised and fitted with Narrow Wide teeth to help keep your chain in place over rough ground.
- 38–50T sizes to suit different terrain and gearing needs.
- Only 60 g in 38T and 99 g in 50T (manufacturer weights).
- Shimano GRX 11s and 12s: asymmetric 110 mm BCD, 4-bolt mounting.
Shimano GRX compatibility
Fits FC-RX600, FC-RX610, FC-RX810 and FC-RX820 cranksets for 1x11s or 1x12s drivetrains without a front derailleur. Compatible with suitable Shimano, SRAM and KMC 11s/12s chains. Not designed for 2x drivetrains.
Sizes and weights
| Size | Manufacturer weight | Outer diameter |
|---|---|---|
| 38T | 60 g | 161.3 mm |
| 40T | 63 g | 171 mm |
| 42T | 66 g | 179 mm |
| 44T | 75 g | 187 mm |
| 46T | 86 g | 195.5 mm |
| 48T | 92 g | 202.4 mm |
| 50T | 99 g | 210.4 mm |
Velo-Perso advice: 38–40T for climbing; 42–44T for versatile Gravel riding; 46–50T for faster courses, depending on your cassette.
Installation and AERO alternative
For better chain security, we recommend a clutch rear derailleur and a chain in good condition. Check that you have the correct ALUGEAR GRX chainring bolts for installation.
Prefer a fuller, aerodynamic-inspired look? Explore the ALUGEAR AERO 1x Shimano GRX chainring, designed specifically for RX810 and RX820 cranksets. The open-spoke round model shown here is lighter.
| Weight | |
|---|---|
| Number of holes | 4 |
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