Availability
Eagle street performance rotating assemblies offer the perfect balance of strength, performance, reliability, and affordability. They include a cast steel crankshaft, Eagle "SIR" I-beam connecting rods, Silv-O-Lite claimer pistons, Perfect Circle rings, and Performance Street bearings. The kits are only available balanced. Eagle street performance rotating assemblies are the perfect choice for engines up to 500 hp. Order the model designed for your year, make, and engine application.
( 23 )
$1,071.99
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$1,440.99
Scat engine rotating assemblies are available with either a high-quality Scat forged 4340 crankshaft or Scat's Series 9000 cast crankshaft, plus I-beam or H-beam connecting rods with 7/16 in. or 3/8 in. cap screw bolts. For maximum power and reliability, Scat adds rod and main bearings from King, Federal Mogul, or Clevite 77, depending upon the application—and pistons and piston rings made by such well-known manufacturers as SRP/JE, Ross, KB, Mahle, Diamond, and Probe. Kits with cast and standard forged pistons have standard rings; kits with premium forged pistons have file-fit rings. Nearly 800 Scat kits are available; order the package tailored for fitment with your engine application.
( 127 )
$1,019.99
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$4,348.99
Eagle Street and Strip rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. These kits feature a crankshaft, pistons, piston rings, rod and main bearings, and connecting rods. Based on your application, balanced assemblies are also available. Order the model designed for fitment on your year/make vehicle and engine application.
( 87 )
$1,074.99
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$3,839.99
Eagle competition rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. Depending upon your selection, these kits may feature a crankshaft, pistons, piston rings, rod and main bearings, or connecting rods. Balanced assemblies are also available. Order the model designed for fitment on your year/make vehicle and engine application.
( 33 )
$1,943.99
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$4,804.99
When it's time to do a rebuild, Hot Rods complete bottom end rebuild kits are less expensive and longer lasting than OEM. These kits have all that you need to get back on track and are easy to put together. Each kit contains a crankshaft, main bearing/seals, and a complete gasket set. Water pump seals are not included. Great performance parts from Hot Rods will have you going, going, strong!
( 2 )
$208.20
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$1,257.11
Manufactured in Italy, Vertex pistons, both cast and forged, are the premier choice and highest quality aftermarket replacement and performance pistons for dirt bikes, ATVs, and UTVs. Vertex also leads the way in manufacturing high performance gaskets for dirt bikes, ATV, UTV, snowmobiles, and PWCs. Conveniently, Vertex offers a huge number of complete engine rebuild kits, each of which will save you time and money over trying to match up the correct components and buying them separately. Oversized pistons are available in some kits. Choose a kit designed for your powersports vehicle. Kits include: * Crankshaft * Piston kit * Complete engine gasket kit * Oil seal kit * Main bearing and seal kit * Water pump rebuild kit * Transmission bearing kit * Countershaft bushing/seal kit * Camshaft chain where applicable * Counter balancer bearing kit where applicable * Wrist pin bearing where applicable
( 1 )
$393.50
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$1,604.76
These Summit/Federal Mogul Premium engine rebuild kits will make your performance rebuild easy and inexpensive. Everything you need is in one affordable package. They're available with or without pistons (cast, hypereutectic, or forged, depending on the application), chromoly faced compression rings, and exclusive SS-50 oil control rings, as well as main, cam, and rod bearings. Various oil pump configurations are available, depending on the applications, along with top-quality gaskets and freeze plugs.
( 5 )
$343.86
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$936.92
Eliminate the wait with Cylinder Works big bore cylinder kits. They arrive ready to install, eliminating the hassle of sending out your cylinder for re-plating or boring, and they're competitively priced compared to typical re-plating costs. These Cylinder Works cylinders look virtually identical to your OEM parts and are conveniently available in "stealthy" big bore sizes. Cylinder Works big bore cylinder kits come in a variety of sizes, so choose the one that best fits your application. Features include: * Super-convenient--just purchase and install * Nickel silicon carbide plated for long life * Honed to exact size for easy piston installation * Complete with gaskets, cylinder, and piston kit * No machine work required
Not Yet Reviewed
$515.94
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$1,201.71
Eagle street performance rotating assemblies with Keith Black pistons offer the perfect balance of strength, performance, reliability, and affordability. These rotating assemblies include a cast steel crankshaft, Eagle "SIR" I-beam connecting rods, hypereutectic pistons, rings, and bearings. Eagle rotating assemblies are test-fitted in house to ensure everything works well together. Take the worry out of your engine build project with an Eagle rotating assembly designed for your year, make, and engine application.
Not Yet Reviewed
$1,846.99
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$2,229.99
Eagle Pro Street rotating assemblies consist of name-brand quality components for a wide range of applications at an affordable price. These kits feature a crankshaft, pistons, piston rings, rod and main bearings, and connecting rods.
( 1 )
$1,709.99
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$4,192.99
Top-end rebuilds can help to improve the performance of your ride, and Namura Technologies top-end repair kits will keep your ATV, UTV, or off-road motorcycle running in peak condition! They include everything you need: pistons, top-end gasket kit, and wrist pin bearings (where applicable) in one convenient, time-saving package. Namura kits are available for a wide variety of makes and models, with specific bore and compression ratio parts to service your specific vehicle. Choose to do your rebuild with repair kits from Namura Technologies—the people who make pistons with attitude!
( 1 )
$46.99
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$241.99
S&S Cycle 107 in. big bore kits are easy to install and require no machining or re-balancing. These are the largest bores that can be fit in your stock engine case. This is the largest bore that can be fit in a stock engine case. Stock engine height is maintained so there are no manifold or frame fitment issues. Using an 11-fin design, the pre-finished cylinders closely resemble the OEM shape and are ready to install. Take your stock engine case as big as it'll go with S&S Cycle 107 in. big bore kits! Product features include: * CP pistons feature a 3cc pop-up dome for slightly higher compression * Cylinders feature an increased fin area for better heat dissipation * Centrifugal cast gray liner features 40,000 psi tensile strength for superior wear and performance
Not Yet Reviewed
$1,175.36
Dart Machinery's 4340 billet crankshafts for the Toyota 2JZ engine platform are engineered to handle high-boost environments and designed to take the legendary 2JZ platform to 2,000+ hp! For your added convenience, Dart 2JZ rotating assemblies are available, allowing you to pair these excellent billet crankshafts with your choice of Boostline steel or MGP aluminum rods, Diamond pistons, and Trend H13 .225W wrist pins. Piston rings are also included. Choose your preference for your Toyota 2JZ build.
Not Yet Reviewed
$6,855.99
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$7,030.00
Eagle rotating assemblies can take a lot of worry out of your engine building project. Eagle's heavy-duty rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. Perfect for the most extreme competition engines, including exotic fuels, heavy nitrous, and high boost, Eagle's HD rotating assemblies are equipped with Eagle's forged 4340 center-counterweighted crank (when available), forged H-Beam rods with ARP 2000 or L19 bolt upgrade and purpose-built heavy duty pistons. The pistons used in Eagle's heavy-duty assemblies are built for high boost levels or bucket-loads of nitrous. Every part is top-of-the-line and ready to support whatever you want to throw at it. Most all assemblies are available balanced or unbalanced if you'd rather your machine shop balance it. Along with crank, rods, pistons, every assembly includes bearings from either King or Clevite and rings suited to the intended application. Externally balanced assemblies balanced by Eagle will also include a harmonic damper and flexplate (or flywheel for some Fords) from Pioneer. Order the model designed for fitment on your year/make vehicle and engine application.
Not Yet Reviewed
$2,759.99
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$4,279.99
Scat Modern Muscle engine rotating assemblies are available with high-quality Scat forged 4340 crankshafts and I-beam or H-beam connecting rods with 7/16 in. cap screw bolts. For maximum power and reliability, Scat adds rod and main bearings from King, Federal Mogul, or Clevite 77, depending upon the application, and pistons and piston rings made by such well-known manufacturers as SRP/JE, Ross, KB, Mahle, Diamond, and Probe.
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$1,839.99
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$3,815.99
When it comes to building horsepower and torque, you need to start at the bottom and work your way up. Manley rotating assemblies are designed for performance enthusiasts wanting to get the most out of their engines. Their assemblies feature 4340 forged steel crankshaft and H-beam connecting rods, either 7/16 in. ARP 8740 cap screws with a 750 hp rating for LS engines/900 hp for big blocks, or optional ARP 2000 cap screws for up to 1,500 hp. They use 2618 Platinum Series forged aluminum pistons, chromoly premium wrist pins, Total Seal piston rings, and Clevite "H" Series narrowed rods and "P" or "H" Series main engine bearings. Building high-horsepower performance engines takes a lot of thought and all the right parts. Start off right with Manley rotating assemblies.
( 3 )
$2,608.42
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$3,856.14
Eagle Hi-Compression competition rotating assemblies consist of name-brand quality components. These engine rotating kits have been engineered for race fuels, including alcohol, methanol, and ethanol. Get a jump on the competition—and start making more horsepower today. Order the model designed for your vehicle year/make and engine application. Includes: * Eagle 4340 steel crankshaft * 3-D forged 4340 connecting rods with L-19 rod bolts * King rod and main bearings * Premium forged pistons * Plasma-moly file-fit rings
( 1 )
$2,679.99
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$3,619.99
Summit Racing™ Forged Pro parts offer professional-grade parts at a good value. Proven reliable at big power, these rotating assemblies combine our forged 4340 steel cranks, forged 4340 steel H-beam rods (using ARP rod bolts), and advanced Forged Pro pistons. The assemblies are available balanced and unbalanced. Rod and main bearings, along with piston rings, are sold separately to optimize fitment around YOUR needs and budget. Check out our handy engine building tools, like dial-bore gauges and ring-filers, to make your next engine build a success and one you can be proud of!
Not Yet Reviewed
$2,654.99
Eagle street performance rotating assemblies with Speed Pro pistons offer the perfect balance of strength, performance, reliability, and affordability. These rotating assemblies include a cast steel crankshaft, Eagle "SIR" I-beam connecting rods, hypereutectic pistons, rings, and bearings. Eagle rotating assemblies are test-fitted in house to ensure everything works well together. Take the worry out of your engine build project with an Eagle rotating assembly designed for your year, make, and engine application.
( 1 )
$1,082.99
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$1,462.99
The S&S Cycle 128 in. big bore kits are for Harley-Davidson® Milwaukee Eight engines to allow you to upgrade your M8 motor to the largest bore size possible—and without required machining of your cases. So ... go big or go home! These upgrade kits are as simple as big power gets! S&S Cycle 128 in. big bore kit features: * 114 in. to 128 in. big bore kit * Bolt-on kit, the largest cylinder bore possible without requiring machining of the crankcases * Cylinders are constructed from premium aluminum castings wit cast-in iron liners * Wrinkle black finish in highlighted and non-highlighted fin versions * Easy installation; no need to bore or split existing cases—just swap the cylinders! * 4.250 in. bore, 4.500 in. stroke * Forged pistons * 11:1 compression ratio * All necessary gaskets and hardware required for installation included
Not Yet Reviewed
$1,403.96
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$1,405.76
Inspired by S&S Pro Stock drag race engines, S&S Cycle 4 in. Sidewinder big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing, or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 4 in. Sidewinder kits offer the biggest cylinder bore that can be installed in a stock crankcase without machining! Features: * Low-friction ductile cast iron liner * 10.5:1 compression * Bolts in with no machining, balancing, or splitting the crankcases * 88 in. engines are boosted to 100 in. * 96 in. and 103 in. engines are boosted to 110 in. * Complete kits include cylinders, pistons, gaskets, and instructions * Wrinkle black and silver cylinders that match stock finish
Not Yet Reviewed
$1,395.86
Vertex top-end piston kits are OEM-style replacements. These kits include everything needed to rebuild a top-end for the specific application selected. When applicable, the wrist pin bearing included is DLC-coated for added longevity. All piston skirts are coated with a high-tech molybdenum disulphide coating for faster break-in and increased piston life along with a T-5 hardening cycle. Rebuild your top-end without worries with Vertex top-end piston kits.
( 3 )
$105.26
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$503.96
Wiseco Powersports Garage Buddy engine rebuild kits are complete with components made from premium materials. They include a complete crankshaft assembly, OEM quality main bearings, all necessary gaskets, seals, o-rings, forged piston kit, and hour meter. The crankshafts feature double-forged connecting rods designed to provide the smoothest rotating assemblies possible. Having a complete bottom-end that's made of 100 percent forged material will give you peace of mind that your motor will last. Order the engine rebuild kit designed for your dirt bike, ATV, and UTV model.
Not Yet Reviewed
$728.99
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$1,034.99
Eliminate the wait with Cylinder Works standard bore cylinder kits. They arrive ready to install, eliminating the hassle of sending out your cylinder for re-plating or boring, and they're competitively priced compared to typical re-plating costs. These cylinders look virtually identical to your OEM parts. Cylinder Works standard bore cylinder kits come in model-specific kits, so choose the one that best fits your application. Features include: * Super-convenient--just purchase and install * Nickel silicon carbide plated for long life * Honed to exact size for easy piston installation * Complete with gaskets, cylinder, and piston kit * No machine work required
( 2 )
$361.56
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$1,065.85
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