The world's most reliable derailleur
advantages of derailleur drivetrains (efficient, lightweight) + reliability of a gearbox
GROUND CLEARANCE
No more broken derailleurs thanks to the derailleur’s two mounting points, protected position in the frame, and its distance from the ground.
EFFICIENCY
More efficient than a gearbox, and more efficient than other high pivot bikes due to the large pulleys and constant chain tension system that reduces drag. You can learn about our measurement of the Supre Drive’s efficiency here.
SUSPENSION PERFORMANCE
Suspension performance is improved by the Supre derailleur’s low unsprung weight (300g lighter than the Sram XO T-Type derailleur).
DAMPING
The chain tensioner has a hydraulic damper that outperforms any derailleur clutch on the market. It’s speed-sensitive, which provides excellent chain stability without hindering shifting. Additionally, there are no sliding surfaces to wear out, so no loss of damping over time.
How does it work?
Conventional derailleurs have two functions: they shift the chain across cassette sprockets and they tension the chain. These two functions are separated in the Supre Drive, with shifting remaining with the derailleur and chain tensioning moved to the middle of the bike. When shifting gears, a chain tensioner arm pivots around the bottom bracket axis to give and take chain slack. The derailleur has only one pulley and a lot of ground clearance.
MADE IN
CANADA
We manufacture our drivetrain parts here in BC, Canada. This enables us to have a reliable supply chain, to provide long term support with replacement parts, and to innovate quickly with our in-house fabrication capabilities.
PATENTED
The Supre Drive is patented in the United States (US pat. 11,560,201) and patent pending internationally.
PINKBIKE 2021 INNOVATION OF THE YEAR
The Supre Drive won the Pinkbike 2021 Innovation of the Year award. It was an honor to win this innovation award up against competition that included Rockshox Flight Attendant.
Technical details
There’s no derailleur hanger and no B-limit, making the derailleur easy to adjust. With the exception of the pulleys and pulley bearings that inevitably wear out, the Supre Drive is low maintenance.
The Supre Drive works with Shimano 12-speed chains, cassettes (10-51t), and shifters. Also, it’s compatible with off-the-shelf hubs, bottom brackets, chainrings, and cranks. Three specific requirements are a 52mm chainline, Super Boost rear hub, and T47 bottom bracket. The minimum chainring size is 28t, and the tensioner arm has clearance for up to 34t.
Our chain tensioner is unique in that it produces constant chain tension across the range of gears. This is acheived with an innovative design that separates the spring from the tensioner arm. You can learn about how this works in this explainer page.
There is very little chain slap noise with the combination of the hydraulically damped chain tensioner and good stay protectors. Also, the large idler pulley makes for a smooth and quiet high pivot drivetrain.
When comparing the combination of the Supre derailleur and chain tensioner to conventional derailleurs, the Supre derailleur + tensioner is about 200g heavier than an XT derailleur and the same weight as an XO T-Type derailleur.
The Supre Drive creates a lot of chain wrap around the cassette sprockets and the chainring. This is beneficial for decreasing wear and preventing the chain from skipping forward under heavy load.
Some folks assume that increased chain wrap causes more drag, but this is not the case. The amount of chain wrap around a sprocket doesn’t affect the amount of drag. A major factor in determining the amount of drag is the pivoting angle of each chain link as it engages and disengages with sprockets. The pulleys in the Supre Drive are big and that decreases the pivoting angles of the chain links which in turn improves efficiency. For example, check out the “oversized pulley wheel system” for road bikes (this is for improving efficiency).