To maximize rider comfort...
To maximize rider comfort for long rides on trails or in the dunes, ASV levers were installed on a set of Flexx bars.
Brian Wraps Up And Tests The 600
"When I got the quad back from Travis I wanted to install an oil cooler of some sort to help keep the oil cool. I found a guy on
www.ktmatvhq.com forums by the name of Polaris Bob. Bob had designed an adapter that fit in the place of the rear oil filter on the RFS engine. At first I was a little skeptical, to say the least. After a lot of homework and talking to people in the KTM racing industry, I found that none of the KTM RFS engine experts have ever found any debris in the rear filter after the hundreds of the RFS engines they had torn down. I then felt comfortable enough to eliminate the rear filter for the sake of keeping the engine temps down. I bought the adapter from Polaris Bob for $140 and then purchased the 10-row JAGG oil cooler from Thumper Racing. The adapter came equipped with high-flow fittings, so I had to come up with the plumbing and the oil cooler mounting bracket on my own. I had some spare 0.019x0.375-inch lightweight titanium tubing and preformed .0375 rubber hose on hand. I had the clamps made by Joe Krafft with a little of my own special touch. Then I visited Western Metals of El Cajon, California, and got some 1/8x3/4-inch chrome-moly strap to make the mounting bracket. Some time measuring, bending, drilling and welding and my bracket fit perfectly. The JAGG oil cooler helps to keep the oil about an average of 35 degrees Fahrenheit cooler.
"In 600cc form, this quad is extremely fast. Lifting the front end sky high is just a slight throttle bump away, while making sure to hang on for the ride. It has so much usable torque in the bottom and midrange the only reason you need to go in the upper rpm range is for racing. Riding the dunes is such a blast in the lower and midrange. Even with the big cam that Travis installed it is very predictable yet comes on extremely strong in the higher rpm range. Blasting up Oldsmobile Hill in fourth gear, I often found the front wheels wanting to loft. You have to breathe the throttle a little bit to let the front end back down, or it can and will bring itself over backward. About the only thing this KTM 600XC needs is a longer swingarm to tame the wheel standing when blasting off from starts. For all you motor heads out there, look up Travis Smith at Thumper Racing. You won't be disappointed."
The MegaBomb 4.1 titanium...
The MegaBomb 4.1 titanium exhaust system from FMF Racing not only helped to increase the power of our machine, but also saved a ton of weight compared to the sto
Build Sheet: KTM 600XC
Thumper Racing:
www.thumperracing.net; 661/424-1800
Stroked, lightened and balanced crankshaft: $1,550; stroker 99mm big-bore kit 12.5:1, includes cylinder sleeve and replate, CP 12.5:1 piston with ceramic coating, gaskets and jetting: $775; piston coatings: $50; head porting: $350; +1mm stainless steel Kibble White valves: $164; valve springs with titanium keepers: $199; Hot Cam Stage One cam: $189; carburetor jetted for 600cc motor: $350; engine gasket set: $180; Hot Rods connecting rod: $137; high-flow water pump: $145; engine assembly labor: $640 [total engine work: $4,729]
JAGG: www.jagg.com
10-row oil cooler, custom with SRC: $259.95
This triple-rate shock upgrade...
This triple-rate shock upgrade is a cost-effective way to increase suspension performance.
; 310/631-4363
MegaBomb 4.1 full-titanium exhaust system: $599.99CP Piston: www.cp-carrillo.com; 949/567-9000
High-compression big-bore piston supplied to Thumper: listed above
Cometic Gasket: www.cometic.com; 800/752-9850
Big-bore head gasket supplied to Thumper: listed above
The Pro Armor front bumper...
The Pro Armor front bumper offers plenty of protection as well as a racy look for our trail-terrorizing KTM.
; 920/893-5595
Over-bore and replating supplied to Thumper: listed aboveHot Cams: www.hotcamsinc.com; 515/402-8005
Stage One cam supplied to Thumper: listed above
Pro Armor: www.proarmor.com; 888/312-7667
Front bumper: $124.95; Peg Sport nerf bars: $379.95 FourWerx Carbon: www.fwcarbon.com; 262/501-9696
Podium carbon fiber hood: $155; carbon fiber carburetor heat shield: $60; carbon fiber exhaust shield: $55