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Old 10-28-2012, 09:31 AM   #1
stan_gsxr1000k5's Avatar
Join Date: May 2011
Location: Cambridgeshire
Motorcycle: Stealth Black GSXR 1000 K5
Posts: 302
Big Improvement?

Hi All,

Just a query really...

I have currently got my 1k K5 in bits and have replaced the head bearings for an All Balls kit of taper roller bearings as the standard ones were getting a bit "notchy".

Also, at the same time I have taken the front forks and rear shock to a specialised suspension setup company who have serviced the forks and shock and changed the springs and valves all round for slightly lighter ones as I only weigh 12st including leathers and helmet etc.
The bike has covered 18k miles, my question is, will I notice a HUGE difference to the handling of the bike when I get it all back together? I hope so, but I was just curious.


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Old 11-13-2012, 04:44 PM   #2
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Join Date: Mar 2009
Location: Calgary
Motorcycle: GSXR1K5a&b, GSXR1100G
Posts: 587
Re: Big Improvement?

According to racetech for track use you need approx 0.97 kg/mm front & 9.7 kg/mm rear for 600lb total weight bike+rider+gear (stock bike is about 445lbs wet) - the oem fork springs of 0.95kg/mm were almost deadon for your weight, the oem rear shock at 8.1 kg/mm was soft. I'm running 1.0 in TraxxionDynamics kitforks & 9.5 in Ohlins shock for 200lbs with gear on 400lb wetweight bike and my front may be a mite soft, rear seems good on the track. Depends on how hard you ride - typically I'd say you want softer springs on the road than the track, unless you tend to carry passengers or touring luggage.
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