At a mere 65 grams, the Lightworks 7075 Chain Tensioner is a popular upgrade amongst 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 7075 Chain Tensioner, making it a cost effective upgrade to save weight on the bike.
|Brand / Model
|Stock Brompton (Plastic)
- 65 grams
- Light weight 7075 T6 body
- Stainless Steel axles
- Compatible with original pulleys
- Supports up to 6 speed
- Titanium and Brass pivot
- Extremely light weight and durable spring
- Available in 9 colours
- Anodized to match components from Chris King, Spurcycle, Philwood, White industries, Aican Cables etc.
The Lightworks Tensioner comes with 2 DLC axles.
There are two version, a default length, and a longer version which is designed for 6 speed external mods. While the longer version can be used on 2/3 speed external systems, there is a possibility that the longer axle might come into contact with the spokes of some wheels.
When the Brompton stock pulley wheels are installed, there is no need to use the pulley mud cap. This cap is used to keep mud off the stock axle which is weak and vulnerable to wear. Lightworks tensioner axles are DLC coated and extremely strong, rendering the pulley cap unnecessary. This also saves some additional weight.