• Yamaha R3 Race Pistons

Yamaha R3 Standard Bore High Compression Kit 320cc 2015/2020


Utilizing State of the Art CNC machines for manufacturing

SP01-320 Guidlines with Information

7 in stock


Spears Racing’s Yamaha R3 Race Pistons High Compression 320 kit This is the new 2 Ring FSR Slipper Skirt forging Piston. Drop in high compression kit includes pistons, rings, lighter wrist pins, cir clips . The compression is 13 to 1. Dome features smooth flowing radius, under crown machining to lessen the overall weight. Anti Det. Grooves, Acc Grooves, Double Broach Grooves for extreme applications including professional competition.

Spears race pistons with the State of the Art CNC Machining and manufacturing alliances with CP Carrillo 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.

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

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
Yamaha R3 Race Pistons High Compression Yamaha R3 320 kit Includes the Following:
Large Valve Pockets for 1mm over valves
Pistons x 2
Wrist Pins x 2
Piston Rings x 2
Cir Clips x 4


Weight 3.0 lbs


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