Dolvitrny Folding Bike Chain Tensioner High Strength Alloy Guide Wheel 8mm Screw for Brompton Lightweight Pulley System Blue

Details

• Tri-Fold Bike Specific Design: Engineered exclusively for folding bicycles to deliver precise chain tension control during compact frame transitions and tight gear shifts.
• High-Strength Alloy Build: Constructed from LONGLASTING high-strength alloy for reliable performance under repeated pedaling load and frequent folding cycles.
• Ultra-Lightweight at 9.3g: Adds negligible weight-just 9.3 grams-so riders maintain agility without sacrificing for rigidity or responsiveness.
• 41mm Extended Length: Provides critical spoke clearance during aggressive gear changes, reducing risk of chain rub or derailment on small-wheel foldables.
• Smooth Sleeve-Guided Movement: Features integrated sleeve technology for consistent, low-friction wheel rotation-enhancing shift accuracy and long-term chain alignment stability.