This 430 Puma kit is for a Honda TRX 250R with an 85mm bore and 76mm stroke crank shaft. All though the Puma will make great power with out porting, on this cylinder we are doing port work to improve transfer and exhaust port shapes. We are improving the scavenging to improve acceleration and increasing exhaust port area to increase peak horsepower. On this built we are using the oversize exhaust manifold. This engine will use on of our large volume drag pipes. The cases have also been machined to accommodate the Puma cylinder.
This is Donny Steele's TRX 250 R with a 76 mm stroke crank shaft. It is using a 85mm LED ported Puma cylinder. The reed valve is a CR 500 V-Force reed valve. The air box is replaced with a LED sheet metal intake tract with K&N filter. The exhaust is the LED big bore pipe and silencer model TRX 465G. It is using a PVL ignition. The carburetor is a 41.5 mm Kehein PWK.
Ported Puma cylinder.
Puma cylinder.
Stock piston (left) and 430 Puma piston (right).
Honda 250R drag pipe.
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