I'm sure if something can be done with the nasty 150 exhaust manifold angle there are nothing but gains to be had, plus expansion chambers really need to be matched to the capacity/tune.

Matt seems to have ironed out the combustion chamber issues after we sent him an NSR500V head to measure up and cross-reference against 150 and 250 heads. We're still waiting for him to send us a motor to evaluate though!
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Andy.
NSR-WORLD.COM

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