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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
exhaust duration advanced
includes nuts and washers
Remove stock crank and install cy 2mm stroker crank
</p> <p>Between the help of Dave and Yamadude
6209 - CNC Ported Full Mod Zenoah 30.5cc 4 Bolt Long Block - Billet Crankcase exhaust duration advancedThis long block now comes with a TR OBR billet crankcase at no extra cost. Every long block or engine is now CNC ported and hand finished. CNC porting and hand finishing is all done in house by the OBR staff. We do not contract out any of our porting so every engine is modified to our exact specifications. We are able to offer higher accuracy this way as well as more power. Our CNC machine has allowed us to take our porting to the next level due to us
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