Shimano GRX 1x Clutch Derailleur 11-Speed Long Cage GS 42T Max Cog

Shimano GRX 11-Speed Rear Derailleur: Precision Engineering for Gravel & Road
Engineered for gravel adventurers and road cyclists seeking rugged reliability, this derailleur delivers seamless 11-speed gear transitions across mixed surfaces—from packed dirt trails to urban asphalt. The proprietary Shadow RD+ clutch system automatically dampens chain vibration on technical descents or bumpy roads, reducing noise by 40%* while safeguarding against accidental drops during aggressive riding maneuvers.

Key Features:
✓ Gravel-optimized tension adjustment (2–5mm range) for fine-tuned chain control on loose surfaces
✓ Direct Mount™ V2 compatibility for 30mm/34mm frame bosses (no adapters needed)
✓ Ultra-light alloy construction (267g) with reinforced pivot points for 20% longer component life**
✓ Dual-mode clutch engagement: “Gravel” setting for loose terrain + “Road” setting for smooth surfaces

Technical Specifications:
| Parameter | Specification |
|———————|—————|
| Speed Compatibility | 11-Speed |
| Cage Type | Long-Cage |
| Chain Wrap Capacity | 31T (max 42T cog)|
| Mount Standard | Shimano RD Direct Mount |
| Weight | 267g |

Ideal For:
– Gravel racers navigating mixed-surface courses
– Road cyclists converting framesets for adventure riding
– Daily commuters needing reliable wet/dry shifting

Performance Edge Over Competitors:
🔹 40% quieter operation vs standard mechanical derailleurs in off-road conditions (independent lab test)
🔹 50% faster index adjustment compared to Shimano Sora series via top-pull design
🔹 100% Shimano Ultegra/S1050 compatible shifter integration without calibration

Built to endure 500+ hours of mixed-terrain use while maintaining precise 1-tooth microshift accuracy between cogs – perfect for bikepacking expeditions or endurance events where chain retention literally keeps you moving forward.