Stage 2 Power Pack for 50cc 4-Stroke 139QMB Chinese Honda Cloned Scooters INCLUDES: NCY Performance Exhaust 72cc Big Bore Cylinder Kit NCY Variator Kit NCY Performance CDI Performance Air Filter 1000 RPM Torque Spring Adjustable 19mm Carburetor DOES NOT INCLUDE BELT COMPATIBILITY: BMS – Apache 50 4T, Heritage 50 4T Diamo – Classic 50 4T Gilera – Capri 50 4T, Ciclone 50 4T Lance – Charming 50 4T, GTR 50 4T Roketa – Bahama 50 4T, Maui 50 4T, Sicily 50 4T Tank – Urban 50 4T, Sporty 50 4T, Viaggio 50 4T Many Other 50cc 139QMB Based Engines **NOTE: EXHAUST MAY NOT FIT YOUR MODEL. MODIFICATIONS MAY BE REQUIRED** **