are senda and gpr front sprockets interchangeable? [Archive] - Bay Area Two Stroke


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03-22-2009, 07:27 PM
I'm thinking about gearing -- sprocket specialists only lists having front sprockets for senda -- will these work on my gpr50... thansk

Dangerous Dave
03-22-2009, 07:44 PM
Same engine, same sprocket...just a different # of teeth, but you can order with however many you like. You can pull it up on this application chart here; Look under Derbi road bikes up to 99cc.

03-22-2009, 08:08 PM
thanks -- because i'm old and can't seem to remember to ask both parts of 2 part questions -- here's part 2:

what's the best way to get a derbi front spocket to work for a 415 chain... can jt or ss or * make such sprockets -- or do i need to get one machined locally?

03-23-2009, 04:50 PM
reply to myself:

neither jt nor ss make custom counter sprockets. However, my local machine shop can thin out the 420 sprocket.