This one sounds great to me, but will this setup run good on pump gas? The seller doesn't know the exact compression ratio with that HRC kit, and says it does run fine on premium, but with only a couple hours on the motor I wonder? Plus the seller is in SoCal, a lot closer to sea level than my Uintah mountain range/playground here in Utah, if that matters. Price is $2000+, the bike looks good, I'll add a pic if I can figure it out. Ad: 1994 Honda XR 600 R Street legal with green sticker (Dual Registry) A great desert bike completely rebuilt with a new HRC Power Up Kit (638cc). Included new cylinder and piston, camshaft, valve springs, and clutch basket. In addition to the power up kit, new rod and bearing, valves, cam chain, clutch center and clutch springs. Transmission was gone through and all suspect gears replaced. New kickshaft pinion and lever. All machine work was done by XR's Only. Mikuni 41mm flat side carb (XR Only) New White Brothers E2 exhaust, new Ricky Stator 200 watt lighting/charging coil, new Ricky Stator Hot Shot ignition. new Michelin AC10 DOT legal knobby tires and Michelin heavy duty tubes. New RK X ring chain. New Dakar lighting kit and UFO fenders. New EBC brake pads. I went through all of the suspension, everything is tight and greased, upper, lower links and rear wheel bearings. The bike came with the Precesion Concepts and SMS stickers, not sure if the forks and rear shock have been rebuilt, but the rear shock has an eibach spring (not stock) at any rate the suspension works great for me (180# rider) Renthal bars, brush busters, heavy duty skid plate and chain guard. Uni airfilter, Clark Desert tank in white and all manuals, bike has about two hours running time since the rebuild.