Vintage Motorcycle Sprocket Specialists 

Manufacturing hard to find parts to better than OEM standards

Engineered to exact factory specifications

 We reproduce all our sprockets using 3D scans of originals when they are available. We use 1045 or 4140 medium carbon steel and heat treat our front sprockets to HRC +50.
We can also reproduce sprocket combinations to suit modern chain profiles.

3D Scanning

We use an Einscan 3D scanner and software for precision reproduction of original sprockets

Cad-Cam

The 3D scans are sectionalised to extract an exact profile of the original sprockets for CNC programming

CNC Machining

Machining is completed using our CNC lathe and 4 axis CNC mill

Finished Product

An exact replica of the original. Even details like the indent from the original press are retained

Sprocket Purchases

Below are examples of the sprockets we reproduce and generally have in stock.

Please send us a message if you would like to purchase any of these sprockets or if you have a specific sprocket requirement. We can reproduce or make just about any type of sprocket, irrespective of complexity.      

250 AUD

BSA 1925-26 Rear Sprocket

Equivalent to part number 15-584

200 AUD

BSA 1926-29 Rear Sprocket

Equivalent to part number 24-6755

220 AUD

BSA 1927-30 Rear Sprocket

Equivalent to part numbers 15-585 

120 AUD

Douglas CW 1924-25 Gearbox Drive Sprocket

Flame hardened to +50 HRC.
Suits Renold 110044 chain

275 AUD

Douglas CW 1924-25 Rear Sprocket

Broached tapered center spline and correct pressed offset. Suits Renold 110044 chain

240 AUD

Douglas EW 1926-28 350cc Clutch Sprocket

22T 4140 Flame hardened to +56 HRC. 3/32" rivet holes and precision ground bore. Supplied with rivets.
Suits Renold 110044 chain

200 AUD

Douglas EW & CW Cush Drive Sprocket

41T
Suits Renold 110044 chain

200 AUD

Douglas EW 1926-28 350cc Rear Brake Drum Sprocket

57T with inner recess for soft solder fillet.
Suits Renold 110044 chain

150 AUD

Douglas EW 1924-25 Gearbox Drive Sprocket

Flame hardened to +50 HRC. Tapered bore with 1/8" keyways
Suits Renold 110044 chain 

 240 AUD

Douglas CW 1924-25 350cc Clutch Sprocket

12 Rivet, 22T 4140 Flame hardened to +56 HRC. 3/32" rivet holes and precision ground bore. Supplied with rivets. 
Suits Renold 110044 chain

220 AUD

Douglas CW 1924-25 Clutch Sprocket

18 Rivet, 22T 4140 Flame hardened to +56 HRC. 3/32" rivet holes and precision ground bore. Supplied with rivets.
Suits Renold 110044 chain

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