RaceFace ARC 30 27.5 Inch MTB Disc Wheel Rim – 28H Black Offset
Original price was: $104.99.$24.70Current price is: $24.70.
Description
ARC Offset Rims – Precision-Built for Modern Mountain Biking
Engineered with asymmetric spoke bed geometry to distribute tension evenly across all spokes (28-hole hub compatibility), these rims deliver up to 30% greater lateral stiffness compared to standard symmetrical designs—critical for maintaining control on technical descents or aggressive trail riding.
Core Innovations:
✅ 6069-T6 Aerospace Alloy: Reduces rotational weight by 12% vs traditional 6061 alloy while increasing impact resistance by 40% (tested to EN 14781 standards)
✅ Tubeless-Ready Bead Lock: Patented dual-channel bead seat holds tires securely at low pressures (25-50 PSI), ideal for loose gravel or rocky terrain
✅ 30mm Internal Width: Optimized for modern 2.3″-2.8″ trail tires without compromising aerodynamics
✅ Zero Brake Track Design: Eliminates brake rub issues common in rim brake systems
Performance Comparison
| Specification | Standard Rims | ARC Offset Rims |
|---|---|---|
| Spoke Tension Variance | ±18% | ±6%* |
| Impact Resistance | Moderate | Extreme (tested @ 2m drop height) |
| Weight Savings (27.5″) | – | Up to 185g lighter† |
| Tubeless Retention | Basic | Military-grade bead lock†† |
*Independent lab testing shows improved trueness retention over 500km rides
†Compared to DT Swiss X1900 SLR (control group)
††Maintains seal integrity at -0.5bar pressure differential
Designed specifically for XC racers (UCI compliant) and enduro riders demanding consistent performance through varied terrain conditions—from XC circuits requiring precise handling to multi-day expeditions needing bombproof reliability. The high-gloss black anodized finish resists scratches while maintaining a professional aesthetic compatible with modern bike builds using Shimano/SRAM hubs and Maxxis/WTB tires systems.
