300ex gearing

[clay3007]

ok here is my delima. i have a 300ex with a 400ex carb, and wb header with hmf slip on and a rev box. i need a new chain and sprockets. i do alot of hill climbing and trail ridin and very little track. im not sure of what gearing to go with. i was thinking 14-40 to keep me close to the 2.92 ratio stock. but i want a little more to keep from hittin the rev limiter since i dont have the valve train work done yet. what do you think?

[rooster300ex]

What size of tires are you running? Does your rev box have increased rpm's or just the power curve? I need to know these things before I give you my opinion.

[clay3007]

20 inch razor tires and yes the rev box has an extra 1000 rpms

[rooster300ex]

If you want alil more go with the 38 on the back and 14 up front since you got a rev box that will make up for keeping it stock gearing with 20in

[Tommy Warren]

if you want a little more yet then go to a 36 on the rear i've never seen one for a 300ex but the one for a 400ex fits perfectly on mine. you may have to pop a couple links out of the chain though!

[ZSNOW]

14 36 is mx gearing and would absolutley suck in hillclimbs unless you had TONS of torque

[Tommy Warren]

works fine for me.. you have to remember that your going from 22" tires to 20" going to a 14 front will pretty much even it out going to a 36 rear gives you a little more top speed but the 300ex's are geared so low i can still climb 60 foot sand hills in 3rd no prob!!!