But as I pick up a Kawasaki ZXR400 road bike tomorrow to start preping for next years lightweight TT, its suspension is going to need looking at closely to see what we need to do to it, as I'm getting fed up with my mate collecting Bronze replicas and hope to build a bike capable of bringing home a silver replica. Would be a ideal project to feature in Pronto if it was a Duke we were preping. [/quote]
I raced a ZXR400 the other year, I had different length bottem suspension linkages & a technoflex rear shock, with K-Tech also doing the front forks, they basicaly ditch all the internals, put 600 springs in , new rods & cartridge.
The linkages help soften the rear and allow the shock to work to its best ability, Give Chris a ring at K-tech, think the number is 01530 810625, they are in Coalvile near Leicester.
http://www.k-tech.uk.com/ Just got details on the linkages, they are made by NWS, the originals are made for two up riding, the NWS are purely for racing & make the suspension more progressive, dimensionly i am led to believe that the Chassis side is shorter, the shock side is longer & the angle is moved from 17 degrees to 18 1/2 degrees.
Another good mod is the use of ZXR600 f & early G model calipers. The pistons on the ZXR400 are 27mm in diameter, the ZXR600 are 30mm in diameter, also the ZXR400sp uses a mixed caliper, front piston is 27mm & rear is 30mm. The calipers are the sameshape size etc as the 400`s so bolt straight on.
A very good ZXR400 tuner (has done many bikes for the Manx & TT is Shaun Webster of R & S Performance in Worksop(01909 482670).
Chris.
[Edited on 20-12-2003 by chris.p]
[Edited on 20-12-2003 by chris.p]