TESTA ROSSA BIG BORE CYLINDER KITS

The new generation Testa Rossa BIG BORE Thermal Units!
Through-hole studs, for liquid-cooled scooters only (7 transfer ports and exhaust crosspiece - 1-segment piston - detachable head - boring of the original crankcase required - crankshaft with connecting rod different from the original).

Derived directly from the seven-port technology that powers the revolutionary Flanged Mount, the BIG BORE Testa Rossa cylinders represent the latest success achieved thanks to the commitment and research that Malossi has continued to dedicate to the engines intended for the original Piaggio and Yamaha crankcases, and, with their unprecedented displacements of 70 and 94 cc, they make a significant leap forward in the performance of the BIG BORE family.

Externally almost indistinguishable from their flanged counterpart, the BIG BORE Testa Rossa features a through-pipe stud layout compatible with both the original engines. Even inside, the total similarity with the Flanged Mount continues, thanks to the renowned seven-port and double exhaust port configuration, with the only difference given by the limits imposed by the internal passage of the studs which influences the size and development of the exhaust. The head is once again modular, with new internal profiles specifically designed to increase torque and the feeling of the engine, now decidedly more brilliant and even more progressive. The head cover is in forged aluminum, red anodized and turned on numerically controlled machines with extremely high precision.
Compatibility Table

PIAGGIO H2O
APRILIA SR 50 2T LC EURO 4 (PIAGGIO CA81M)
APRILIA SR (CARB.) 50 2T LC 2004-> (PIAGGIO)
APRILIA SR R (CARB.) 50 2T LC (PIAGGIO)
APRILIA SR STREET 50 2T LC EURO 2
DERBI GP1 50 2T LC
DERBI GP1 OPEN 50 2T LC
DERBI GP1 REVOLUTION 50 2T LC
GILERA RUNNER 50 2T LC
GILERA RUNNER SP 50 2T LC <-2005 GILERA RUNNER SP 50 2T LC 2006-> (C451M)
PIAGGIO NRG 50 2T LC
PIAGGIO NRG EXTREME 50 2T LC
PIAGGIO NRG MC2 50 2T LC <-1997 PIAGGIO NRG MC2 50 2T LC 1998->
PIAGGIO NRG MC3 DD 50 2T LC
PIAGGIO NRG POWER 50 2T LC EURO 4 2018-> (CA71M)
PIAGGIO NRG POWER DD 50 2T LC
PIAGGIO NTT 50 2T LC
PIAGGIO QUARTZ 50 2T LC
PIAGGIO ZIP SP 50 2T LC <-2000 PIAGGIO ZIP SP 50 2T LC 2001->
GILERA DNA 50 2T LC
Code: 3115349
The Product may be reserved exclusively for competitions in places specially designated for such purposes according to the provisions of the competent sports authorities. We decline all responsibility for improper use.
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Billaricambi staff