Supersprox Steel Edge Sprocket RFA-478:46-BLK - Standard


Includes Free mainland UK shipping

Save £10 when you buy a complete chain and sprocket kit

Supersprox Steel sprockets have been developed on the race track to give long life and high performance for all street bikes.  They used CAD design and CNC laser cutting to ensure an exact fit.  They've been made to an excellent standard using Supersprox Tri-Zinc Electro Plating anti corrosion black finish.  These sprockets should last 3 times longer than any aluminium sprocket, but are the lightest Steel sprockets on the market.

The coloured versions of this sprocket are the Edge sprocket with a recessed lip further reducing weight and allowing the addition of an aluminium face plate to allow a change of sprocket centre colour.  This gives similar appearance to the more expensive Stealth sprocket but at a more affordable price point.Exclusive teeth design offering unto 15% longer life

  • Lasts 3 times longer than any all Aluminium sprocket
  • CNC machined to produce some of the lightest steel sprockets on the market
  • Tri-Zinc Elector Plated to give a quality black finish and prevents rust
  • Now available as an Edge Sprocket reducing weight further and allowing a selection of aluminium coloured faces. 

We can offer a full range of Supersprox sprockets.  The items listed as in stock are available for delivery, out of stock items are usually on back order and have a variable delay in delivery.

If you'd like an estimated delivery on out of stock items, or you can't find the colour or size you're looking for, please ask.

525 Pitch - 45T

This Sprocket is also available in the other Sizes.


Supersprox was founded in Wales in 1959, by Roger Maughfling.  Roger was a passionate enthusiast and loved all things motorised, but particularly motorcycles. He opened a motorcycle repair shop in Mid Wales. Following WW2, parts were in short supply, so Roger began to make his own sprockets for bikes in the shop.   Eventually the motorcycle repair shop turned into a small sprocket production factory.  The company grew, and the market began to demand higher quality parts. By 1975, the company had its own product name (Supersprox) and was to be found on bikes rolling out of Husqvarna, Maico, Triumph and Norton. Supersprox are now true world leaders in the production of performance motorcycle sprockets, from Aluminium rear sprockets and steel countershaft sprockets to the beautifully designed Stealth Sprocket which mixes the best of both to provide longevity, style and weight saving. Supersprox are suppliers and technical partners to many motorcycle producers inc KTM, Husqvarna, Honda HRC and Yamaha. 


Supersprox Stealth Sprockets


What is a Stealth Sprocket?

A Stealth sprocket is a steel sprocket, riveted to an alloy core or centre.  This provides the best combination of weight saving and the longevity of a steel sprocket - similar to a floating brake disc.

Are they better than aluminium?

A stealth sprocket will outlast any aluminium sprocket by up to 3 times.  There is the extra weight, however the steel section of the sprocket is relatively small and the extra weight is easily outdone by the longevity.

Are they better than steel?

It will last as long as a steel sprocket, but it isn't possible to create the level of strength with a steel sprocket of the same weight as a Stealth sprocket.  You may find light steel sprockets, however they will not be as durable or be able to handle the torque produced by modern bikes.

Are the rivets strong enough?

Supersprox have been riveting sprockets for over 20 years, they have installed over 6 million rivets and not had a single failure.  

It's known that a Stealth sprocket has covered 20,000 miles and they are used by factory teams in the Dakar Rally and Baja 1000. 

The construction of a Stealth Sprocket

Supersprox Stealth Sprocket


Supersprox Edge Sprockets

 Now enhance your steel sprockets for other bikes

If you're looking for a combination of the best sprockets on the market, and a durable chain from either AFAM, DID or RK, please view our Chain and Sprocket Kits page - you can filter by bike to find the kit you need.

We offer Standard Gearing Kits - these are to the original manufacturers specifications, or we can offer a "Choose Your Gearing" kit, allowing to select the size of the sprockets you require.

 Here at WSC Performance, we pride ourselves on offering the best sprockets and chain combinations available, we are constantly expanding our stock of Supersprox Sprockets and we can offer the full range by order.

If you can't see what you want, please contact us here.  Please note - delivery times can vary. 

Are you in the Trade and want to sell Supersprox, contact us!