At a mere 65 grams, the Lightworks aluminum alloy Chain Tensioner is a popular upgrade among the Brompton weightweenie community. Like all Lightworks products these Chain Tensioners are designed around weight savings, aesthetics, functionality and durability.
 
For reference, a Stock Tensioner from Brompton is about 35% heavier than the Lightworks Chain Tensioner, making it a cost effective upgrade to save weight on the bike.
 
Key Features:
– 65 grams
– Special coating axles, make the finish last long as your watch
– Compatible with original pulleys
– Supports up to 3 speed or 6-speed internal hub
– Titanium and Brass pivot
– Extremely light weight and durable spring