Jolly Motos are one make that we've never tested, but seem very comparable with early Jha in appearance. Normally I'd steer well clear of visual comparisons, but both the early Jha and the JM's are noticeably fatter in the belly than other brands, and the similar Jha pipes seem to perform just how you describe.

If it's for the street, I don't think you'll be disappointed reverting to the OEM chambers on an otherwise standard bike. As the graph in my previous post shows though, modifying the airbox can make a noticeable difference too.
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Andy.
NSR-WORLD.COM

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