Not only is that, going from the numbers you posted, a 5% weight increase, it's WHERE the weight is (even though 20lbs on a bike is a LOT more than 20lbs on a car). See if you can get a test ride, and you'll immediately see that it takes a LOT more work to lug a big, clunky old GSXR around the track and you'll see what I mean.
I still think you would have been better off with something else that was a little better put together, but you do seem to be getting it cleaned up and pieced together properly - although that GSXR is an even WORSE buy than a not-all-together SV...it's also going to be harder to replace parts when you break stuff (bust something up on your SV in the morning on a trackday, and there will almost certainly be someone with spares for it for you to buy or borrow - try looking for a rearset for a 2000 GSXR at the track). Also, if that turd really IS shitting out 125hp (which, bike hp numbers translated into the real world is a COMPLETELY different discussion that I don't feel like getting into at the moment), that's a LOT of stress on that motor, and I wouldn't expect it to be reliable.
Here's a good example for you. This is a CMRA race from a few years back, the camera bike is Chris Romeo. He held the #1 overall plate in CMRA a few years back (in 2008, if memory serves correct), and was THE guy to beat on an SV (still is, on the rare occasion he drags his ass out to the track). Rumor has it that his 2nd gen SV makes in the neighborhood of 100hp, but I won't confirm or deny that (I know what it was making then, and I've seen the engine torn apart, and it's insane and impressive to say the least). The blue bike is Rich Desmond's old 1st gen endurance SV, which is STOCK motor with exhaust - other than that, NO motor work. Zero. They did a 6 hour endurance race on that bike the day before, and let Dustin Dominguez (who grew up with the CMRA, and has been dominating in AMA SS this year) take it out for some fun in the D Superbike race.
This is a stock, 50-ish 'real' wheel horsepower 1st gen SV up against an insanely built superbike 2nd gen.
Viddler.com - 2009-10-18 Race #10 - Superbike D EX
This was also, at that time, THE fastest laptime ever put down by an SV at Texas World Speedway. Dominguez dropped it by another second or 2 the following year on another SV. TWS is a HUGE horsepower track, and is the highest-speed track that we race at. Granted, there aren't many folks in the country at the moment that can ride a bike like Dustin can - Dustin's fastest in this race was a 1:52.4 and Chris's was a 1:51.9 (Dustin won the race) - those times would have put them finishing top 10 in the 600 classes - and that's at a track where 9 times out of 10 horsepower DOES win the race. There weren't any older GSXR's there that day, however there were a handful of F3's (ridden by Cameron Kirk, son of former AMA fast guy Rick Kirk; and Dave Wilson, another old-school crazy-fast guy), and the best they were doing was 1:57's. In 2011, Bill Erzal (another ex-AMA fast guy) raced a GSXR600 in the Classic Unlimited class and ran a best time of 1:52.8. Fun fact about Bill's bike, it's an ex-Nicky Hayden AMA superbike (he has an article on the internet somewhere about the GSXR, I believe it was posted on ApriliaForum.com) - that gives you an idea of essentially what these bikes are capable of - I don't doubt that the folks I've listed here are anything but THE absolute FASTEST guys on these particular bikes.
But, ultimately, it's whatever YOU like. Do what makes you happy, either way you're having more fun than most other folks on 2 wheels are :thumbs:
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