*In the case of this product and stock camshaft, the low and middle speed torque will be increased, but the maximum rpm will be lower than stock 50cc.If you want to extend the maximum rotation speed, please purchase the "High Camshaft (39191) " (sold separately). *This product may have increased vibration due to the increased bore size. *When installing this product, be sure to install an oil cooler and an oil temperature gauge to control the oil temperature.Continuous running at high temperatures (over 100°C) may damage the engine. *When installing on Magna 50, it is necessary to cut the limiter.(Unplug the pink wire coming out of the CDI.)
[Parts recommended for simultaneous installation] Primary side reinforced 3 disc clutch kit (68131) Mega Oil Pump TYPE2(74670)(*Not fit for Monkey/Gorilla 3-1PS(6V).) Reinforced cam chain (82 links)(77415)
[NORMAL HEAD BIG BORE] Low to mid range power & torque increaseBig bore kit to use stock head.
・Flat shape to match stock head shape.The piston ring is a 3 ring type for better sealing at high RPM. ・Lightweight aluminum cylinder with excellent heat dissipation.Large fins provide high cooling effect.
[Engine Concept] Easy to use big bore kit using the stock cylinder head.It is the best choice for the first time to increase the bore, and you can easily experience the torque and power up in the low and middle range. Lightweight aluminum alloy, high durability cast iron sleeve cylinder & piston set.The cylinder has large fins for high cooling effect.In the case of the 88cc kit (φ52 cylinder), the cylinder can be used and upgraded to the Hyper head or Dyna head later on.Please use it as the first step of 4 mini customization.
●It is recommended to replace the carburetor and exhaust to get the best performance from the big bore kit. ●It is recommended to use with the parts listed in the table on the left because of the increased power.If the parts shown in the left table are used as stock parts, there is a possibility that the engine will not be able to withstand the increase in power and will be damaged. ●The compression ratio is about 11-5: 1 (88cc).
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
I thought ?, if it was a description hard to see to put it bluntly and did not need to attach.the durability with the light Aluminum cylinder -- ? -- how is it?View Detail
Bore up of the cub 50 was carried out to 85 cc. at this price, this was the cheapest with aluminum -- it came out, and since it was sushi and a safe daytona, this was used. Although it wavered with 88 cc, from a 3-cc difference, the reinforcement of the cylinder was considered and it carried out here. I think whether if attachment is Ho who touches a motorcycle and a car usually, it will be possible in about 2 hours. Torque of comment increased and they became quite forcible. By an instant, 60 km compares in 50 and does not become a thing. However, since the top was inelastic at all only by equipping with bore up and the big carburetor of PB16, the maximum high speed became slower than 50. It is the shin without being able to carry out special character exertion if PB18 and a high cam cannot be entered when constructing this.View Detail
Two-sort sticker attachment and an aluminum cylinder were attractive at this price. He was surprised at the weight differences of a pure 50-cc cylinder and the 85-cc cylinder here at the time of inclusion. Since the cylinder sleeve is thick 1 mm compared with 88 cc, it is expectable also in durability.View Detail
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