Kawasaki EX400cc Ninja Overbore + 2mm Bore Piston Kit 2018/Current
Kawasaki 421.81cc Pistons +2mm kit by Spears Racing has a new 3 Ring FSR Slipper Skirt forging Piston. This kit includes pistons, rings, lighter wrist pins, cir clips . The compression is 12.7 to 1. This design is lightest 2mm pistons which comes with 1mm o/s valve pockets and deeper pockets to allow the Spears Racing Camshafts to fit with this new design. Each piston dome is brushed to remove any and all sharp edges
10 in stock
Spears Racing Overbore Kawasaki 421.81cc Pistons +2mm Spears Racing has been designing and making race pistons with the State of the Art CNC Machining and manufacturing alliances with JE Pistons for decades. Spears Racing continuous committed to excellence to advance as the industry changes. This commitment has resulted in more forgings specific to certain applications, proprietary treated wrist pins and piston rings manufactured only for us. Each of these aspects has been put through stringent research and development stages to ensure that our product will exceed your standards. The Spears Racing Kawasaki Ninja 2mm over piston has a special under-crown machining to reduce the weight to be closer to the OEM Piston weight.
At the forefront of performance, piston manufacturing has been a result of continuous research and development both in the dyno room and on the race track winning championships all over the world.
The stock OEM cylinder will need to be bored and coated with a proprietary Nickel Silicon Carbide (NSC) cylinder plating process and cylinder services.
Overbore 421.81 cc Piston Kit: This is the new 3 Ring forging Piston made for Spears Racing by JE Pistons. This 2mm over kit includes pistons, rings, lighter wrist pins, cir clips . The compression is 12.7 to 1. At the forefront of performance, piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilizing State of the Art CNC machines for manufacturing, along with purpose-designed forgings, while being able to maintain exacting specifications on each and every piston – holding tolerances to millionths of an inch. This is the new forging that is lighter than other 2mm Pistons.
Spears Racing Piston Kits have been winning races and Championships all over the world for over 4 decades. Spears Racing pistons have been in several of the race wins in close course racing and in road circuits in Europe and has won the Isle Of Man TT Twins several times.
“PREFERRED PERFORMANCE” PISTONS KITS BY SPEARS RACING”
Kawasaki 421.81cc Pistons +2mm Includes the Following:
Pistons x 2
Wrist Pins x 2
Piston Rings x 2
Cir Clips x 4
Piston Weight:161 Grams