GRAND-SPORT POLINI 208 piston kit POLINI 208 cast iron cylinder
Finally it is available! The brand new GRAND-SPORT piston kit for the POLINI 208 cylinder!
GRAND-SPORT piston kit especially developed for the POLINI 208ccm cylinder kit.
Piston kit with a modern layout and 18% sillicium alloy, offering an extended lifetime and a perfect shape stability.
2 extremly strong 1mm steel piston rings, providing maximum break resistance combined with maximum freedom for individual exhaust port shaping.
The position of the steel piston rings has been lowered by 1,8mm. This eleminates ring problems at the top edge of the cylinder when using a long stroke crank shaft.
Although the GRAND-SPORT piston is "stronger" than the original POLINI piston, the weight of this new piston is almost the same.
The transfer port design offers an optimized gas transfer with more "out of the box" power in the whole RPM range.
CNC manufactured boostport windows are enlarged and reinforced.
Optimized piston pin clearance with lubrication grooves.
Biconic piston pin comes as astandart with the piston kit.
Piston diameter: 68,00 / 68,50 / 69,00mm
Compression heigth: 42,50mm
Piston length: 81,40mm (with piston crown) / 76,00mm (without piston crown)
Piston pin diameter: 16mm biconic
Piston ring quantity: 2
Piston ring thickness: 1mm
Scope of delivery:
1 Piston with 2 rings, 1 pin and 2 clips
Rings: GS1026000 / GS1026050 / GS1026100
Pictures might look different.
|Shipping weight:||0,50 Kg|