Mark M.
2/1/2025
I've known Gary for many years, going back to mid-late 1970's, he is the go-to guy for anything 2-stroke related and can build a set of pipes for any 2-stroke bike out there. His specialty is with...
Spec II
Closed
(7)
12457 Gladstone Ave Ste F
Sylmar, CA 91342
Spec II in Sylmar, CA is a renowned tuner specializing in the RD RZ motorcycle series.
With a strong online presence, Spec II offers a wide range of services and expertise for enthusiasts of these iconic motorcycles.
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Reviews
3.07 reviews
Leonard S.
10/11/2023
Encyclopedic knowledge of 2 stroke Yamahas, gathered from almost 50 years of racing and building experience. His pipes have a reputation for strong midrange torque (deserved). Don't know if he's...
Dave H.
12/30/2023
Gary has done some machine work and has supplied a good number of parts for me over the years. Just be ready, he's one of the most interesting and often bizarre individuals you could ever meet....
Glen P.
5/20/2023
Gary Shumake definitely knows his way around two strokes and I would highly recommend him if it wasn't for him being such a terrible businessman. He is a nice guy with some health issues which...
Rick M.
4/30/2022
I had Gary do $2100 worth of work on my 1986 RZ350 Canadian motorcycle, back around 1990. This guy is a terrible businessman. He disassembled everything, and said I needed other cylinders, and he...
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