High-strength and corrosion-resistant, the TI Parts Workshop Titanium Rear Derailleur Spring is a great upgrade for 2- or 6-speed Brompton rear derailleurs to ensure you get the fastest, most accurate and responsive shifting possible between gears.
Made from low density, high strength, corrosion resistant, anti-fatigue 6AL4V Titanium,
improvement for the rear derailleur,
faster and more accurate when you shifting between gears.
Weight: 2.4g
BTP-54A