you should have done a search. but at any rate it is less weight and rotating mass on the driveline. i did a -1 and +3 and it is awsome. it will last just as long as a stock setup as long as it is installed properly and maintained by lubing the chain once in a while. really no major drawbacks.
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2006 RAVEN-Full Yosh TRC Carbon System. Graves Block-Off Plates, PC3 USB, Shogun No-Cut Frame Sliders, Speedo Healer, Greggs Customs Front Flush Mounts. Powdercoated Pass. Pegs and Rearsets. Zero Gravity Clear Dubble Bubble. CRG Shorty Roll-A-Click Levers in Black. Michelin Pilot Power 2CT Front and Rear. EBC HH front Pads. Galfer Black Brake Lines. Acumen Digital Gear Indicator. GYTR Filter. Tuned Stock Suspension. Integrated Rear Turn Signals into Pass. Pegs with L.E.D.s
If you change your gearing, your speedometer and odo will be out. But that's minor. These bikes arn't meant for high mileage anyways, so ride the snot out of them while they're young! Anyways, that'd be the only drawback. I'd suggest play with the gearing and do the swap yourself.
there are no drawbacks to a 520 conversion using the stock gearing. if you go with the popular -1 +2 set up the only difference is your speedo will be off a couple m.p.h and you will be doing about 6000 rpm at 60, 7000 at 70,and so on, so it will be a little bit of a rever on the freeway. it would be about the same as if you were cruising in fifth gear with stock gearing. I usually find myself in forth or fifth anyway when doing a short jaunt as i like to see the tack at around 7-8 g never lower than 6g when on the freeway or city streets.
If you change your gearing, your speedometer and odo will be out. But that's minor. These bikes arn't meant for high mileage anyways, so ride the snot out of them while they're young! Anyways, that'd be the only drawback. I'd suggest play with the gearing and do the swap yourself.
you're joking right?
i know and have heard of TONS of guys who are pushing 50K on their odo's on yamaha's. even guys who have hit 100k and still goign strong wtf are you talking about...
r6's should last you 100k miles if properly maintained.
Only drawback I have to mention for the 520 is keeping my damn chain clean! Stupid dirt!
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depending on the how you change the teeth it runs through the revs and is always reving high. If you plan on racing neither are cons and there are none.
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2009 R6 - Full exhaust, gold click-a-roll shorty levers, pc5 w/ custome tune, 520 with -1+2, pro grips, carbon fiber engine covers, all lights intergrated