Compatible models: Monkey/Gorilla FNO, Z50J-2000001~ FNO, AB27-1000001~1899999 | Monkey Baja all models | XR50R/CRF50F AE03 all models | Dynamic balance is set with KITACO ULTRA-SE and DOHC88cc pistons, so use with other pistons is not recommended. Please be sure to check the engine displacement and model year before purchasing.

41.4mm normal stroke reinforced crankshaft developed for ULTRA-SE, DOHC bore up 88cc. The H-section connecting rod, ax-shaped knife-edge crank web shape, and larger diameter large end pin greatly improve durability and reduce friction loss. Also, compared to the stock crankshaft, it is approximately 100g lighter. *Ultra-high-speed precision bearing and timing gear already included. *Dynamic balance is set with Kitaco ULTRA-SE and DOHC88cc pistons, so use with other pistons is not recommended. *Please be sure to check the engine displacement and model year before purchasing. In particular, the shape of the crankshaft for Monkey and Super Cub models differs depending on the car model and year. *When installing a stroke-up crankshaft, be sure to check the oil pump spindle shape. Due to its shape, it interferes with the crankshaft and the crankshaft cannot be installed. If necessary, please purchase a spindle separately. Note (Disclaimer) > Please read carefully *The published photos may differ from the actual product due to changes in manufacturer specifications, etc. Please note.


Manufacturer: KITACO
Brand: KITACO
Package size: 17.7 x 16.8 x 11.9 cm; 1.9 kg
Product model number: ‎ 309-1123300
Product weight: ‎1.9 Kilograms