I'm the firfighter brother. Actually running 178 main, not 170. I swear by the CCK. Can lug all day in low gears like a XR600. Still has plenty of get-up-and-go when you want it with no wicked hit. Very manageable power delivery. I also have a 52T rear sprocket that was already on bike. I'm sure this helps too. Did the RB head mod this year. Now even better. More crisp and runs "cleaner". Plug nice color with very little spooge. Needle is cheaper than throttle cams, flywheel weights, and other expensive ad-ons. Makes the bike very fun and easy to ride.
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Rob
2003 EC250
1991 XR250L
1974 XL125
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