Installing a Sigma Kit on XR250

esspressolungo

Senior Member
Joined
Jan 10, 2012
Bikes
Honda XR 250
It is always nice to gain a little power, especially when it is easy to do and not expensive. I ordered a Sigma Jet kit for my XR250L for about 30 US dollars. I had a friend of mine install the kit and now I am more then happy with it. I was thinking of buying a Mikuni carb to get more power, but this kit hasn't disappointed and is worse every penny. I only can recommend it, it was the best money ever spend, the power increase is amazing and it saved me a lot of bucks compared to the mikuni upgrade.
 
Sounds good , Rudi. My CRF-230 has the same Keihin carb, but with a small diameter of 29mm. I like to do some mods for more power. The jet kit seems to be a good solution.
 
O.k. here are some answers, the kit mainly consist of a new needle, where one can adjust between three settings, 2 different main jets, a very detailed instruction manual, I will try to post the link, so you can check what else is in the package:
Honda XR250L XR250 XR 250L 250 L 6SIGMA Custom Carburetor Carb Stage 1 3 Jet Kit | eBay

I hope that the link works, I had this modification for over a week and it is really great, the lame XR250 got now some unbelievable bite, I just love it, Sigma sells on ebay, but they also have their own website, with a lot of information, they know tuning, at least for standard bikes like mine is. Let me know if you need more infos.
 
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