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updating an f2

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Old Aug 12, 2015 | 02:39 PM
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want to update the suspension on the f2. what fit with the minimum of hassle. wold love usd forks and a deep braced swing arm. have seen a couple of 600rr arm that look good, but havent got a clue if they will fit.
jeff
 
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Old Aug 12, 2015 | 09:40 PM
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94 f2 forks rebuilt with new seals, bushings, oil and springs for your weight. 94's have more adjustment than 91 thru 93. But those can be rebuilt and set up for your weight also. Next would be F3 forks, pretty much same as 94 f2 forks except better brakes but you'll need the wheel,brake rotors, spacers,and calipers. I dont know about the master cylinder, probably need it. These are bolt on. As far as the rear goes, get a Fox, Ohlins, or equivalent rear shock set up for your weight. Anything more then this would be "more than minimum hassle". Also a F3 rear wheel will bolt on and its a half inch wider than the F2 rear wheel.
 

Last edited by coalminer frank; Aug 12, 2015 at 10:16 PM. Reason: Xcitement 711
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Old Aug 12, 2015 | 10:12 PM
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Also, a couple fellas on this site put late 90's 600 or 750 GSXR USD forks on their F2 or F3. It, I believe was all bolt on but you need everything, the whole mother loving front end, handle bars, master cylinder, triple clamp, steering stem, wheel, rotors, calipers etc. And then the handle bars might hit the gas tank and maybe the upper fairing might be in the way, since the bars will be below the clamps instead of above like the factory f2 front end. As far as swingarm is concerned, a new model would look cool as hell and be hell to get on the F2, you also would need everything, wheel, brake, maybe shock, etc. and I doubt it would be an improvement over the f2 swingarm with a good aftermarket shock.
 

Last edited by coalminer frank; Aug 12, 2015 at 10:18 PM. Reason: Xcitement 711
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Old Aug 14, 2015 | 02:16 PM
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Originally Posted by coalminer frank
Also, a couple fellas on this site put late 90's 600 or 750 GSXR USD forks on their F2 or F3. It, I believe was all bolt on but you need everything, the whole mother loving front end, handle bars, master cylinder, triple clamp, steering stem, wheel, rotors, calipers etc. And then the handle bars might hit the gas tank and maybe the upper fairing might be in the way, since the bars will be below the clamps instead of above like the factory f2 front end. As far as swingarm is concerned, a new model would look cool as hell and be hell to get on the F2, you also would need everything, wheel, brake, maybe shock, etc. and I doubt it would be an improvement over the f2 swingarm with a good aftermarket shock.
Right on the money. Biggest bang for the buck would be some 94 forks setup correctly and a good rear shock. You'll have all the suspension you need.

USD forks and braced swingarms aren't going to buy you anything. They are a lot of time and effort. Remember, you're still bolting them to a 20 year old steel frame.
 
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Old Aug 15, 2015 | 01:44 AM
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aye, thinking about it, i might have the forks already. my bike is a '93-'94. it has got adjusters on the top of the forks.might just be a good shock for the back
 
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Old Aug 15, 2015 | 09:19 AM
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94 forks, on top, the preload adjustment is round with 2 flat parts to use a wrench to adjust. On top of that is a flat bladed screwdriver adjustment, thats the rebound adjustment. 93 thru 91 forks have just one bigger flat bladed screw driver adjustment for the preload.
 
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Old Aug 15, 2015 | 09:41 AM
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O, a few more things 93-91 forks have black lower tubes where the 94 F2 and F3 fork lowers are silver. Get a Clymer manual and follow the instructions. I've rebuilt my 94 forks its not that bad. After disassembly I rinse everything with keorsene and dry with compressed air. A home fix for better working 94 F2 and F3 forks is cut 2.6 coils from the springs tightly wound end, by doing this you increase the rate. Now make up an asortment of schedule 40 PVC pipe spacers to install on top of the springs to help get the preload right when you set the sag. And 7weight fork oil 115mm from the top of the forks fully compressed/no springs.
 
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Old Aug 15, 2015 | 11:37 AM
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Some of you might be wondering where I get this information, I've raced CCS in 94 and 95 on a 87 Hurricane 600, then 96,97,98,and 99, on 94 F2. Does the names Nick Ienatch, Lance Holst, Jason Black and Kent Kunitsugo ring a bell. These were the main guys at SportRider magazine back then, (kent is still there). And I've read them all like they're the bible. They knew these bikes inside and out, especially Jason Black, with the help of Andy Milton. The information I've posted is what they did to their bikes to race. Plus the guys we used to pit beside at the races, raced a F2 and gave me some tips and tricks to do to the bike, and he was way faster than me. Lance Holst also raced a F2, highly modified by Ontario(Kaz Yoshima) that would do 165 mph! 5.5in rear wheel, custom triple clamps, ram-air, and a bunch of other stuff. The suspension modifications I've posted is what I did to my F2 and I've did a couple 1:23's at Summit Point in 2013 with racing slicks. Now I'm tracking my 08 CBR 1k all stock with street tires and I've got down to a high 1:22. Summit is a horsepower track. So in other words my F2 handled awesome (it now has a cold cylinder I cant figure out).
 
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Old Aug 15, 2015 | 12:49 PM
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cheers for the info frank. just hada look out of the window and i have 94 forks. and the shock has a remote adjuster, but i guess that is standard.
 
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Old Aug 15, 2015 | 03:05 PM
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Yes 94's came with a remote adjuster and a black spring. What color is your spring? Red spring with remote adjuster is F3 shock.
 
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