PORT9 BIG Bore Kit Product # KN-P9GA-1
The 26x11-12 6PR ATV/UTV tire with dynamic tread pattern provides exceptional acceleration and traction. Versatile tread patterns perform well in soft to hard pack conditions. Lug design provides better braking control. Heavy 6 ply rated nylon construction resists punctures and abrasions. Tires only, wheels are not included.
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Product detail
[Material]
・Cylinder: made of aluminum
・Inner wall: Chrome
[Kit Contents]
■Cylinder x 1
■Cylinder head x 1
■Head GK (0.5mm) x 1
■Base GK (0.2, 0.3, 0.4, 0.5mm) x each 1
■Piston (57Φ) x 1
■Piston rings x 2 (1set)
■Piston pin x 1
■Piston pin clip x 2 (1set)
■Small end bearing x 1
[Specification]
■Compatible engines: 4VP
■Displacement when using stock crank: 121.4cc
■Bore diameter: 57mm
■Compression ratio: 1: 14
■Squish recommended: 0.8mm
■Cylinder length: 89.8mm (Stock 85.8mm)
■Piston Weight: Approx. 140g
■Combustion chamber volume: 9.19cc
Finally finished!The first ever aluminum plated center rib cylinder kit!
The cylinder is made of aluminum and the inner wall is plated to improve both output and durability.
The pistons are designed to accommodate large exhaust ports, and are balanced in weight and durability.
A special head is also included for optimum performance when used with stock cranks.
[Product Features]
■Cylinder height is extended by 4mm.This makes it easy to use with long stroke cranks available on the market.
A design that enables port timing that was previously impossible.
All the know-how that KN planning has cultivated is packed in order to achieve specifications that satisfy all users from beginners to heavy tuners.
■The index combination is
PORT9+stock crank+BIG carburetor kit (28Φ+4 BIG reeds+in manifold) +G03 or G03-X.
The drivetrain is also equipped with KN project products to get about 14PS!*Reference value stock approx. 6.5 PS
■Of course, it can be ported for more power.
The wall thickness of the outer wall of each port is also designed in consideration of the processing.
■The special cylinder head adopts the long reach plug type.
This makes it easy to machine the head when a long crank is used.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
- Estimate delivery times: 7-12 days (international)
- Return within 30 days of purchase. Duties 7 tases are non-refundable
Shipping & return
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Return Policies
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