*You will need to check your current stock crankshaft before purchasing. *If the crankshaft has runout more than the standard value, it is necessary to remove the runout or replace the crankshaft. *The product number of the crankshaft support adaptor differs depending on the vehicle name or frame number, because the mounting shape to the stator comp differs. *Can not be installed with SP Takekawa generator plug (05-02-0044, 05-02-0045, 05-02-0046) at the same time.
*Depending on the lot, the product may be delivered with the old price and label with the old JAN code before the price change.
The crankshaft journal has been changed from a 3-point support to a 4-point support to reduce crankshaft wobble in the high RPM range and to increase the durability of the stock crankshaft.
■Details On the GROM, MSX125 and MSX125SF, the generator is mounted on the L. crank case cover, so the flywheel mounting direction is closer to the outside (shaft tip). Because of this, the rotating weight of the heavy flywheel is placed on the outside of the crankshaft tip, and the load during acceleration and deceleration is doubled in the engine with improved pickup. This may cause interference between the generator and flywheel, which may adversely affect the ignition timing or, in the worst case, damage the crankshaft.
This product has a ball bearing in the stator to change the crankshaft journal from a 3-point support to a 4-point support to limit the crankshaft runout that occurs in the high RPM range of a bored-up engine. By limiting the runout, the durability of the stock crankshaft can be increased.
■Patent pending structure No need to replace the crankshaft, the crankshaft journal can be supported at 4 points by installing the crankshaft to the stock parts.
■Recommended for vehicles equipped with SP Takegawa engine parts. It is a must-have item for high response engines such as SP Takekawa Super Head 4V+R Big Bore Kit.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
In preparation for the Bore up, I installed the 125cc as is.
Leg shield removal and Removing the cover around the engine (I had to force myself to take a few.) The preparation for installation was a bit Large strange because it required
After installation, the vibration at high rpm is no longer a problem. I can now rev with confidence! I'm glad I installed it.View Detail
Another supporting mod for the BBK upgrade is the 4th bearing support to keep the engine in good health with that added power from the 143cc N-20 kit. Beautifully made item from Special Parts Takegawa as you would expect and installation was accomplished when I had the left side of the engine open for other upgrades. Keep designing great parts Takegawa the Monkey 125 owners love them all.View Detail
Although I did not do Power up, when I changed Clutch to oil pressure, because the centrifugal oil filter attached to Crankshaft was removed and the load was eliminated, absurd Vibration occurred, I did not intend to put it on, but if I put it on, I thought that I could reduce vibration and installed it. I did. What a surprise! Vibration is reduced (about 80%)! How much is now about a NORMAL new car.
Installation is a pain in the ass! If you're going to do it, I'd recommend a replacement assembly with the Super Camshaft Chain Tensioner as well! The process is the same.
I don't think it's necessary unless you Bore up or otherwise power up, putting it on a NORMAL car won't reduce the vibration!
Fits well and definitely as described to stabilise the crankshaft. It even comes with a gasket.Instructions are in Japanese but the it is accurate and easy to follow as with every Takegawa products. Will with only with stock inspection cover. If English instructions is required you can find it on the Takegawa website. But nothing phone android translator.View Detail
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