2015 Mongoose 300 clutch kit questions.

[cummins6.7rob]

Just bought my kiddo a mongoose 300. She is blind in one eye. We went to the sand dunes, and it did alright with a larger rear sprocket and paddles. It needs a clutch kit though. I can order the EPI clutch kit from Kymco, or I can order the parts from EPI. The reason the I think the clutch is beneficial, is because there isn't much torque or power to spin the tires quickly on a small incline. The four wheeler just gets stuck. The sand was pretty soft.

My first question is what are the stock clutch roller weights and what weight do you recommend for riding in the sand?  What color of springs do you recommend also?

[cummins6.7rob]

Talked with KYMCO today, and the stock roller weights are 25 grams. Called EPI just before, and they recommend going 5 grams lighter on roller weights. Guys from EPI are great. They didn't see anything for the mongoose 300, and after digging around they found the components are the same as the MXU 500. This is what the guy said from EPI.

Now I know what components to order for the clutch, I wonder how much improvement a HMF exhaust and a K&N filter will do.

[cummins6.7rob]

Update. I finally ordered a clutch kit for my daughters mongoose. EPI was no help. They had no idea what parts Kymco's kit used. The guy that I had talked to no longer works for them. I'll have to give an update after our trip to the dunes.

[cummins6.7rob]

Update Kymco no longer sells the clutch kit for the mongoose 300. It is discontinued. I called EPI and ordered the maroon secondary spring and purple primary springs. I ordered roller weights from racing planet. Stock roller weights are 23x18 and 25 grams. I ordered 20 grams.  It was around 30 dollars for the roller weights. I ordered a 13 tooth sprocket from Racing Planet. There is a 13 tooth sprocket available for the kxr 250 that fits the mongoose 300. I ordered it and put it on. The 13 tooth sprocket fits perfectly. Now this quad will perform decently at the sand dunes. This ATV now has a 13 tooth counter sprocket and 40 tooth rear sprocket.

[Redk]

Great to see you have made progress with your situation and have shared all that great info here on the forum !
Tnx
redk

[orvilleortiz538]

Hey cummings6.7rob how did your upgrade turned out on your Mongoose 300cc I bought this 2 of a real estate Investor who was cleaning out his yard of the house he was about to sell, so I offered $350 for both Atv's and took it, so the Yamaha Raptor 660R I'm building a monster,Stage 2 Hotcams,CP Carillo piston 102mm (686cc) 11:1 Comp, Full Yoshimura RS3 exhaust system,elka stage 2 front shocks,stage 2 Dyno jets, now I started doing research for the Kymco Mongoose 300cc...  Any links for better parts?

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