The cylinder is made of top quality aluminium with Nikasil coating and comes with a cylinder head immediately recognizable thanks to its trademark anodized blue cover. On the technical side, the cylinder has 6 transfer ports and a bridged exhaust port and comes with a modular cylinder head and a single-ring piston with a 12mm pin.
2Fast put a lot of thinking and effort in recalculating port timings and redesigning transfer port layout resulting in stand-out performance in this category; in combination with the right components (28mm carburetor, digital internal rotor ignition and Hyper Racing exhaust), this cylinder kit can reach 22 to 24hp. Definitely one of the most powerful kits in the 70cc “Hyper Racing” class!
Specifications:
- aluminium cylinder 39.3mm stroke / 85mm connecting rod, 6 transfer ports
- bridged exhaust
- aluminium cylinder head with 2mm clearance
- 1-ring piston 47.6mm, 12mm piston pin
- 2 screws
- compression 1:15:8
Attention: As with many high-end cylinders, it is necessary to mill the crankcase to open it a bit.
Weight | 1,62 kg |
---|---|
Brand | 2Fast |
Product type | Cylinder kit |
Tuning level | High-end |
Displacement | 70cc |
Homologation | No |
Piston pin | 12 mm |
Cylinder material | Aluminium |
Bore | 47,6 mm |
Stroke | Original |
Conrod length | 85 mm |
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