I believe stock is 14 front 38 rear. I'd suggest going to a 15t front and keep back stock. Makes a nice difference in power delivery making the gears slightly taller. Might want to consider replacing your chain at the same time. I bought a chain sprocket set from RMATV for ~$90 that I've been very happy with. It was the Primary Drive Gold X-ring chain/sprocket combo. I had to buy the 15t separately($15), but I like having a spare 14T on hand so it was worth it to me. When putting on the 15t the PD chain was the perfect length, I didn't need to remove any links making the install VERY easy.
Also if you're hearing a lot of noise I'd bet its your front chain roller. They go bad fast. Buy a UPP/Moose case saver and just remove the roller all together.
07 Raptor 700
Barker Duals, CFM performance air box, K&N with Outerwears pre-filter, PCIII, AC nerf bars, G-Force axle, Alba Racing front bumper, PRM Rear grab bar, Tusk handlebars,
Armadillo rear skid plate, Kenda bearclaws rear, Rock Beadlocks, ITP Holeshot XC front , eBay hand guards, MSR shorty EZ pull clutch lever, Pro Elite ebrake block off,
Heavy Duty Tie Rods, PD Xring chain/sprockets 15t front, UPP case saver/case saver repair bracket
Last edited by BuiltforBoost; 05-05-2017 at 12:57 PM.