ITALKIT HYPER RACING crankshaft in long stroke 40mm against 37.4mm for the origin and with a connecting rod of 85mm against 80mm for the origin, this crankshaft saves in displacement and therefore in torque, power ... With its 2.6mm of stroke in addition (requires a 1.3mm shim under the cylinder, so 2 very thick base gaskets) and a 5mm shim for the long connecting rod which allows less forcing on the engine movement and the piston, it offers a lot of additional displacement!
Examples:
-All original: 41mm cylinder diameter, 37.4mm stroke = 49.00cc
-Long stroke crankshaft with original cylinder: Cylinder diameter 41mm, stroke 41mm = 53cc
Original stroke crankshaft with Ø47mm kit: 65cc
Long stroke crankshaft with Ø47mm kit: 69cc
It is therefore a gain of 4cc of torque and power that is offered by this crankshaft, apart from that, it is specifically balanced for less vibrations and good performance! Its fuller masses offer more pre-compression in the lower engines for even more performance gains! Well reinforced, this crankshaft is strong enough to support the largest kits on the market!
Mounts on:
SUZUKI scooters like the KATANA, ZILLION ... APRILIA SR, MOJITO ... 50cc
* Requires a shim for the long connecting rod + 5mm and for the long stroke + 1.3mm, i.e. a 6mm shim with gaskets ...
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