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shehatesmyatv
04-18-2007, 07:27 PM
Will shocks off of a 250R fit a 400EX can anyone answer this.And what can I do to a 400EX to get more torqe I already have installed a full White Brothers exhaust and a k&n air filter and got a jet kit on the way.

m.h.s.c.#527
04-18-2007, 08:44 PM
smaller sprockets or a high comp piston or smaller tires

esr250r86
04-18-2007, 09:14 PM
Yeah, they should fit.

project400ex19
04-19-2007, 09:44 AM
you can either drop your front sprocket to a 14 or 13 tooth sprocket or go to a 39 or higher sprocket. your stock gearing is 15/38. Also a shorter tire in the rear = more torq, taller tire in the rear = higher top speed.

shehatesmyatv
04-19-2007, 03:28 PM
thanks guys what compression piston do you recomend.

MO-EX-RIDER
04-19-2007, 05:29 PM
250r shocks are shorter than an ex shock...im 98% positive the 250r is 15 3/4" and 400 is 16 1/4" will work but lowers ride height and has a shorter stroke

and on the piston 11:1 is very popular, but i'd go 12 or higher:devil: :devil:

beaner75
05-19-2007, 02:27 PM
a 250r rear shock is 16 .25 inches just measured