
SRAM X-Sync 42T 107mm BCD 4-Bolt Chainring – Blast Black 1x12spd
$25.72
Description
SRAM X-Sync Road Chainring: Precision-Engineered Power Transfer
Optimized for AXS E-Bike Cranksets | 42T Single Ring | 12-Speed Compatible
Built for cyclists demanding seamless gear transitions and unwavering drivetrain stability on mixed terrains. The X-Sync Road Chainring combines advanced tooth geometry with military-grade durability to elevate road riding performance.
Performance Enhancements
- X-SYNC Dual Tooth Profile: Aggressive chain retention on climbs (up to 30% better bite than standard chainrings) paired with smooth engagement on descents
- X-Range Gearing Integration: Perfectly complements SRAM AXS systems for 500%+ gear range progression without cog clutter
- 107mm BCD Compatibility: Direct bolt-on fitment for Praxis Powerlink and Shimano Hollowtech II cranksets
Durability Redefined
Precision laser-engraved surface withstands 500+ hours of training rides while resisting micro-fractures common in cast aluminum rings. Tested under ISO 6336 fatigue standards to endure repetitive torque loads typical in criterium racing or century rides.
Quick-Change System
Patented single-tool installation system reduces crankset rebuild time by 40% compared to traditional multi-tool setups – ideal for time-crunched racers or touring cyclists needing rapid gearing adjustments.
Specification | SRAM X-Sync | Competitor Avg.* |
---|---|---|
Chain Retention | 98% | 82% |
Wear Resistance | 2000+ km | 1200 km |
Weight Savings | 15g | Standard |
Tool-Free Adjustment* | Yes | No |
*Based on SRAM internal testing vs leading competitors’ OEM models
Ideal For: Competitive road cyclists (cat 3+), gravel endurance riders (≤28c tires), and e-road commuters needing reliable power transfer in variable conditions (tested from -10°C winter training to +40°C desert stages).
Technical Specs:
• Material: Aerospace-grade 6061-T6 aluminum
• Tooth Count: 42T (±0.1mm tolerance)
• Chain Compatibility: Shimano/SRAM 12-speed chains only
• Color: Matte Black oxide coating (meets ASTM D3961 salt spray standards)
Note: Bolt kit required for installation (sold separately as P/N BBX00-013)