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Installing a GSXR swingarm
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Installing a 2001 Ducati Monster fairing
Fix a broken oil filter cap bolt
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Installing SV650 Chainguard
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Installing a GSXR front end
Installing a GSXR swingarm
Installing GSXR rear passenger peg brackets
Installing an OEM Bandit 400 rear hugger
Installing a Bandit 400 rear wheel
Installing a GSXR rear wheel-simple swap
Polishing your wheels
"The Mystical Art of Tire Reading" and other tire info
General tire info for the GS #1
General tire info for the GS #2
General tire info for the GS #3 - mixing brands/types
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Slip-on exhaust : using stock SV650 muffler
Installing an R6 tail
Installing GSX-R600 stock rearsets
Installing CBR600 stock rearsets
Replacing stock front pegs with CBR pegs
Replacing stock front pegs with Katana pegs
Why re-jet a stock US bike
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Jetting for 2001 models
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Bigger, better, lighter...for a racing GS, why not?

Bob Broussard has a 90 GSXR 750 swingarm on his GS. He had a 93 gsxr swingarm on it before. The linkage from the 90 works with the shock for '96-'99 750. The shock was turned out to be way too long, but with the '90 linkage it works great.

The swingarm needs to be narrowed to fit the frame. The bearings are the same as the GS, just use the stock spacer and bolt. He also had to grind the frame inside behind the pegs so the swingarm wouldn't rub. The most difficult part is the shock linkage. The 90 gsxr pivot piece is wider where it connects to the frame. It has 2 bearings while the GS has 1 wider bearing. Except for the width, they are the same. He milled the piece down to fit the frame and used the GS bearing and spacer.
 
His extra long shock fits with the correct ride height. A different shock would cause the rear to be too low unless it can be lengthened enough with the ride height adjuster like Fox shocks have. Or you can find a 96-99 gsxr shock.
 
 

The GSXR swingarm is lighter and stiffer than the GS one. It has much larger sized tubes, and are made from aluminum. The GSXR swingarm also would allow the use of the wider GSXR wheel and wider race rubber. The later GSXR also uses a very large diameter hollow aluminum axle, which weighs about 1/2 the solid steel GS one, and is also stiffer. Very small deflections in the rear axle would allow considerable movement at the rear contact patch, which steers the bike in response to bumps and power application. The rider doesn't want that kind of steering input on a racetrack!

Lighter and stiffer is always better for  a race bike. The GSXR has lots of great technology in it - the 750 GSXR weighs the same as the GS500, makes 3 times the HP, and controls all that power at very high speeds. They've really worked at making it light and stiff, so transferring that technology to the GS where possible can only help.

Special thanks to Bob Broussard and Kevin Caldwell from GStwin.com