GSX-r 600 fork swap riding impressions
After swapping the stock fork from my 2006 SV1000s for a 2005 GSX-R 600 unit, I took the bike to the track and had it professionally set up by a track-side suspension expert. The spring rate and oil weight (described in the swap article linked above) were spot-on, and the shorter overall length of the fork was not a problem at all on track.
The fork is noticeably stiffer over choppy bumps, but not by any means harsh. Cornering is completely free of any wallowing and therefore feel more stable, though the stock fork did an admirable job as well in my opinion. Turn in is not dramatically improved, though transitions do seem to require slightly less effort.
The major difference, and it is a night and day difference, is during braking. The fork feels like it has nearly no dive at all, and the bike now tracks straight and true even under extremely hard braking. I could brake significantly later and much harder into turns, and the bike felt totally composed and confidence inspiring. I was not expecting this much of an improvement, and I am very pleased.
Lever feel is incredible and positive as well, and I am not using a radial master, nor braided lines yet. I tried fitting the radial master from the GSXR, but with the LSL raised clip-ons, the brake lines would interfere with the clip-ons. The radila master simply did not fit and I was initially concerned that would mean reduced braking power, but the performance with the stock SV master has proven to be fantastic, and I feel no need to use a radial master at this point.
For a tracked bike, I feel the braking improvement alone is worth the expense and time of this swap. After two track days, I have managed to take 5 seoncds per lap off of my previous best times. However, I still feel the stock fork and brakes were more than up to the tasks of street riding, including very spirited canyon carving.
Overall, I was not sure if I would notice an improvement over the stock system, which I believed to be very good, and in most respects the improvements are not dramatic. However, if better extreme braking is what you are after, the GSXR 600 fork’s combination of more aggressive damping and stiffer overall structure serve up what you need in spades.
Plus, they look the business!