Big Bore Upgrade Kit - Kitaco 143SE - 143cc SE-4V | KLX/DRZ 110 | '02-Present

For those of you that already have Kitaco's 143cc SE bore kit, this kit allows you to upgrade your kit to the Complete 143cc 4-Valve Big Bore Kit. Kitaco engineers designed a brand new SOHC 4-Valve head that produces exceptional horsepower and is available in two displacement packages. This potent 143cc version and a very aggressive 160cc version. Key features of this new head include: centered spark plug location for superior combustion effeciency, Pent Roof combustion chamber design and the use of Y-Style slipper type rocker arms. This rocker arm design is lighter weight then typical screw type and runs with less friction. A forged, 60mm piston with MoS2 coating is matched to an aluminum cylinder with a plated aluminum sleeve. NOTE: Requires ND IY24 (410-KLX-1176) spark plug sold seperately.


• 4-Valve Head Assembly
• Forged, Moly coated piston kit (60mm/13mm pin)
• Gasket kit


Additional Specifications:
143cc = 60mm bore x 50.6mm stroke (stock crank), Valve Size = Intake: 21.5mm x (2), Exhaust: 18.5mm x (2)


Stock KLX110 - 53.0mm bore, 50.6mm stroke