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jkv45 · December 15th, 2017, 08:07 AM

I'm looking for something like this to go with my Derbi GPR -

Aprilia RS 50. There are a ton of hop-ups available for these - big bore, stroker cranks, carbs, pipes.

These guys from the SF area are way into it -

http://www.bayareatwostroke.com/forum/index.php

https://www.gprcamp.com/foro/

December 15th, 2017, 08:07 AM	#246
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	I'm looking for something like this to go with my Derbi GPR - Aprilia RS 50. There are a ton of hop-ups available for these - big bore, stroker cranks, carbs, pipes. These guys from the SF area are way into it - http://www.bayareatwostroke.com/forum/index.php https://www.gprcamp.com/foro/