BIG BORE 50mm M3113030

The new BIG BORE 50mm, stroke 39,2-39,3 and 44, cylinder kits comes from the technology of the famous Malossi 7 ports cylinders. They are designed for both Minarelli and Piaggio engines.
All pilots, thrilled about the news, wished to test them. The expectations were not disappointed : the power increase and the absolute reliability proved, once again, the high quality of the products and Malossi professionalism.

Technical specifications:
- 7 ports cylinder, H2O, gravity melted in aluminium alloy, cylinder casing coated in cermetal, lapped with diamond tools
- Bore 50
- 1 ring, strengthen and rounded head piston
- KDN5 cast iron piston ring Ø 50 x 0.8
- Modular head in primary aluminium alloy, drained, with calculated and orientated convoying system of cooling circuit.

Technical note : the BIG BORE cylinder kits must be used only coupled with Malossi crankshafts.

ATTENTION: to grant the due stiffness to the cylinder kit, the cylinder has an introduction diameter into the crankcase of 56,2 -0,1/-0,2 mm. Therefore, it is necessary to bore the crankcases with a boring bar of 56,7 + 0,0/0,1 mm for a depth of 21 mm.
 

APRILIA APRILIA SR (carb.) 50 2T LC 2004 (PIAGGIO)
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
APRILIA APRILIA SR R (carb.) 50 2T LC (PIAGGIO)
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
DERBI DERBI GP1 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
DERBI DERBI GP1 OPEN 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
DERBI DERBI GP1 REVOLUTION 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
GILERA GILERA DNA 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
GILERA GILERA RUNNER SP 50 2T LC <-2005
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
GILERA GILERA RUNNER SP (carb.) 50 2T LC 2006-> (C451M)
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
GILERA GILERA RUNNER 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG EXTREME 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG MC2 50 2T LC <-1997
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG MC2 50 2T LC 1998->
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG MC3 DD 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NTT 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO NRG Power DD 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO QUARTZ 50 2T LC
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO ZIP SP 50 2T LC 2001->
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544
PIAGGIO PIAGGIO ZIP SP 50 2T LC <-2000
Crankcase MODIFICATIONS: BORING AND CHAMFERING - EXCLUSIVELY for crankshafts 53 9212 - 5314544