othing in powersports gets a tougher workout than a dirt bike, an ATV or a UTV. One season, sometimes one session into the game and these machines can be ready for a teardown and a rebuild. The use and abuse of a Sport Quad, dirt bike or a UTV wreaks havoc on these motors. It’s the price we pay for the fun we have. It’s an accepted part of the deal. Wiseco, a leader for more than half-a-century in the engine-parts field has everything it takes to get these machines back up and running better than ever. Wiseco’s Top End Kits, Off-Road Kits, Piston Kits and Crankshaft Kits are as good as it gets, and they’re available in direct-fit applications for all the newest ATVs, UTVs and dirt bikes. Parts Unlimited has everything in stock.
     It’s not like you’ll have to push these sales. ATV, UTV and off-road riders all know they’ll be needing engine parts, usually sooner rather than later. None of that’s going to come as a surprise. So when these riders come in asking for the parts it pays to have what they need. You won’t do any better than the stuff with Wiseco written on the box. These are the same replacement parts that top race teams worldwide count on, and have for years. Wiseco is the only high-performance piston company in the aftermarket with complete control over the alloys in its pistons. And Wiseco demands the best. In-house forging presses and dedicated tooling guarantees quality, too. Wiseco engine parts are strong, they’re lightweight and the reliability is uncompromised. And absolutely everything is extensively tested before it’s released. It’s little wonder why pro teams turn to Wiseco, and on top of all this the prices are right. Wiseco quality is competitively priced with anything in the market. All of this hardware is available for the newest machines out there, too.



his is easier than ever now. Wiseco has combined the most technologically advanced pistons on the market with a high-performance Top End Gasket Kit that even includes all new needle bearing where applicable. Everything needed to perform that top-end rebuild the right way the first time is here. It’s quick, easy, convenient and the feature-list is impressive.
     Wiseco’s Hi-performance Forged 2- and 4-Stroke Pro-Lite pistons are formed from premium alloys to produce the best performing, best sealing pistons available. These pistons exceed OEM standards with race-proven designs CNC machined to an optimal cam shape and profile for peak horsepower and a long service life. There’s real strength here and reduced friction. These aren’t just replacement pistons. The Wiseco Kit is a step-up everywhere it counts, in quality and performance. The piston domes are designed to greatly improve flame travel, the alloys are Aerospace quality, there’s Horizontal Slot pin oiling, the skirts are specially coated to further reduce friction and resist scuffing and the piston pins are hard-chrome plated. Add in a Wiseco Hi-performance Ring Set and that Wiseco Top End Gasket Kit with its premium materials throughout–again exceeding OEM standards–and it’s clear why all this is a Number 1 choice of top race teams everywhere, in all forms of racing.





igging deeper into the engines Wiseco’s Crankshaft Kits are every bit the equal–quality wise–of those Top End Kits. Every Wiseco Crankshaft Assembly features double-forged and shot-peened connecting rods. More than just super strong, these connecting rods are precision machined to the highest dimension accuracy. Combine that with exceptional crank webs and the highest quality bearings and you’ve got a Crankshaft Assembly that’s a cut above the rest.
     The feature list here is impressive, too. Those shot-peened rods are double-drilled at the small end for extra lubrication and cooling to reduce top-end distortion. They’re coupled with optimized hot rolled steel crank pins that have been precision honed to guarantee ultra-round bearing surfaces. All the rod bores are case hardened with precision engineered oiling slots and the latest-design caged needle roller bearings provide the highest possible RPM. Nothing’s been overlooked and nothing’s been shortchanged.
     The Wiseco Crankshaft Assemblies are sold complete with connecting rods, top end bearings and inner crankshaft webs. Multi-cylinder applications include the main bearings (unless specified otherwise). Everything is pre-assembled and precision trued, ready for installation.



f course there’s a full selection of Replacement Pistons with applications right up to the newest, latest machines like the 2007 Kawasaki KX250F and 2007 Suzuki RMZ250. The Wiseco Pistons come complete with rings, the pin and the circlips. More than just replacements, Wiseco’s pistons exceed OEM standards. Once again the piston domes are designed and configured to greatly improve flame travel, the alloys are all Aerospace quality, the Horizontal Slot pin oiling is here, the piston pins are hard-chrome plated and the piston skirts are specially coated to reduce friction and resist scuffing. All this is offered in a wide variety of standard and overbore sizes and a choice of compression ratios.
     Sooner, rather than later, your ATV, UTV and dirt bike riders are going to come looking for engine parts. You know it, they know it and thankfully Wiseco has what they need. In spades, all as good as it gets and sensibly priced. It’s all available through Parts Unlimited.