METRAKIT MK800D2526 Thermal unit cylinder kit

The little brother of Metrakit's Pro Race 3, the  Metrakit 70cc SP3 Cylinder Kit Derbi Euro 3 (D50B0)  with notable improvements over the older version. This 70cc aluminium kit includes cylinder, piston, cylinder head, stud bolts and gaskets. Metrakit suggests having a selection of cylinder gaskets of various strengths to adjust squish clearance. The original cylinder was redesigned and now has 5 transfer ports instead of 6. Port timings were modified as well to get more torque and higher rpm. The exhaust port was not redone. The 47.6mm Vertex piston comes with 1 ring with anti-wear graphite coating.  Performance and torque are quite impressive: 15 - 17hp at 13,500rpm and a 13:1 compression.  Maxiscoot recommend the SP 3 exhaust or another Hyper racing exhaust to go with the Metrakit 70cc SP3 Cylinder Kit Derbi Euro 3 (D50B0). We also recommend replacing the crankshaft with a reinforced one such as the Pro Race 70cc . Moreover, you should use a 21mm (minimum) or preferably a 24mm carburetor to get a powerful, well-balanced set-up.
Gruppo Termico Metrakit SP 3 70cc aluminium, Derbi D50B0 dal 2006
Numero Articolo: MK800D2526
Marca: Metrakit
Omologazione: No
Cilindrata: 70cc
Corsa: Originale
Lunghezza Biella: Originale
Assortimento Prodotti: Racing
Materiale: Alluminio
Alesaggio: 47,6 mm
Spinotto Pistone: Originale