2XT Yamaha TZR250 crankcases #5 polished gas flowed
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2XT Yamaha TZR250 crankcases #5 polished gas flowed
£425.00
2XT Yamaha TZR250 crankcases #5, polished / gas flowed reed block housing and transfer entrance. These are from the 1988 Japanese model, with wider reed housing. Ideal for those chasing maximum power. These are interchangeable with TZR250, R1-Z and TDR250 engines, allowing the use of larger reed valve and manifold set (we have these available, listed separately).