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130.63 USD (20,825 JPY)
Delivery Information
Out of stock at the manufacturer.
Grand Axis
All years
BWS100 (Bewith)
(All models)
RX100
[Size]
56mm
[Specification]
117cc
[Set components]
・Cylinder
・Cylinder head
・Piston
・Head gasket
・Base gasket
・Piston ring
・Piston pin
・Circlip
・Exhaust gasket
・Simple instructions
**Piston needle bearings are not included.Item Number NEED-100 recommend purchasing this item at the same time.
*The carburetor setting will vary slightly depending on the chamber and other modifications.You have to be a skilled person to set up.
*Please do not install the catalytic converter exhaust on the exhaust gas regulation vehicles.
*The test run is the result of the track. .
This type has sub-ports on both sides of the scavenging port.
The total number of exhaust ports is 3.(Also known as: 3 port)
I tested it on my new Grand Axis 3.
Top speed was 85km / h when new.
The maximum speed of the kit without modification was 90km / h.
This test was done with the stock carburetor and kit.
Because the port shape is different from stock, the gear shift range is increased.The torque has increased a lot.
If the setting of the intake system and the drivetrain is refined, the maximum speed will be further increased by the 3 port data.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
Reviews with image
Fits:SYM RX100 RX100, YAMAHA BWS100 BWS100 (All models), YAMAHA Grand Axis Grand Axis All Years
Oct 27, 2015
The KN Planning Bore Up Kit With Head is a good quality bore up kit. I cleaned up the porting on mine a little and skimmed a little off the head with sandpaper and a flat surface. Combined with a PWK28 carb, V force reeds and a G03 exhaust it's an awesome setup. Plenty of parts support if you pop a piston or need rings... Like I did. 57MM go!
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