Partner Sites
Martin & Slater www.MotoMX.com
PW Only www.PWOnly.com
Morini Franco USA www.MoriniFrancoUSA.com
TDR Plastic Lab www.TDRPlastic.com

DeNardis Engines www.DenardisEngines.com

Black Dragon www.MotoMiniShop.com
Top End Machine is a one-stop shop for performance and cosmetic upgrade parts for your small motocross bike! We currently carry parts for Yamaha PW50, Yamaha PW80, KTM50, KTM65, KTM85 and even Morini Franco Engines. Check our catalog below to see if any of our parts suit your needs, and be sure to come back as our inventory is constantly expanding. If you have any questions, do not hesitate to e-mail us at TopEndMachine@hotmail.com

PW50 Performance Silencer

- 20% Lighter than Stock
- Heavy Duty Construction.
- Increases Performance
- Rebuildable

Price: $55.99 ON SALE
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Transform your PW50 with this bolt on PW50 TOP END MACHINE Attack Handlebar Kit. Ride with better handling and control with proper motocross form. Straighter bend and slightly taller and wider than stock OEM handlebars. NIGHT AND DAY difference guaranteed to be the coolest thing you can buy for all year PW50s.

pw50 attack handlebar kit pw50 attack handlebar clamp

Available in aluminum bar anodized colors available blue, red, silver, green, black, or gold.

TOP END MACHINE

ATTACK HANDLEBAR KIT

Parts included in Kit: Alloy bars, front brake lever, rear brake pedal conversion, throttle assembly, single throttle cable, kill button, cross bar pad, soft grips, and CNC billet machined top triple clamp. 

*An Oil Block off plug is needed to complete kit.


  • CNC billet machined top triple clamp

  • 1/2 waffle super soft grip set

  • Single wire throttle cable

  • Foldable front brake lever

  • Light weight engine kill button

*Must install Black Dragon ignition kit included on 1981-2001.

Handlebar Color





Grip Color

Optional Bling - CNC billet throttle assembly and cable anodized colors available. This is an upgrade to the kit. Choose standard if not wanted.



For the taller rider we have an Attack Handlebar Tall Boy Kit. Options are limited and the handlebar is only available in black. This kit adds 3" to the handlebar height.

Parts included in Kit: Alloy bars, front brake lever, rear brake pedal conversion, throttle assembly, single throttle cable, kill button, cross bar pad, soft grips, and CNC billet machined top triple clamp. *An Oil Block Off Plug is needed to complete kit.
Grip Color
*Must install Black Dragon ignition kit included on 1981-2001.

Optional Bling - CNC billet throttle assembly and cable anodized colors available. This is an upgrade to the kit. Choose standard if not wanted.

pw50 power plate upgrade

*Many people do not want to run a 60cc top end kit on their PW50s because it's totally illegal for many racing tracks and clubs in 50cc classes. This new PW50 Power Plate isn't legal to use everywhere some race tracks do allow it because the PW50 retains its stock 49cc displacement.

PW50 TOP END MACHINE POWER PLATE
Price: $52.99
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Install this special CNC aluminum POWER PLATE under stock 50cc cylinder for a mid range and top end power increase. Your PW50 will rev out much quicker and run more efficient because this plate will allow the exhaust port to properly open at the correct time as the piston goes up and down. This TOP END MACHINE brand PW50 power plate is made in USA from quality CNC 6061-T6 aluminum.

Please note: cylinder milling is needed when fitting this power plate to bike.

Free instructions and & gaskets are included.

Click Here to View/Print Miling Instuctions

pw50 cylinder kit & power plate
PW50 TOP END MACHINE POWER PLATE with properly milled 50cc cylinder & piston kit
Price: $139.99
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60cc High Performance 44mm Top End Cylinder Kit - High Compression Cylinder head, piston, rings, spark plug, cylinder studs, head & base gasket included.

$129.99 $99.99 ON SALE

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PW50 Big Bore Cylinder Kit

60cc High Performance Engine Kit - Includes Cylinder Kit with Oil Level Block-Off Plug, Clutch Gasket, Low Ratio Transmission Gear

$246.99 $226.99 ON SALE

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pw50 60cc big bore engine kit

60cc High Performance Engine, Exhaust & Ignition Kit - Cylinder Kit, Oil Block Off Plug, Upgraded Silencer and Performance Ignition Kit Included.

$399.99 $349.99 ON SALE

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PW50 Single Shock Rear Suspension Kit – Forks Optional

The TOP END MACHINE PW50 Single Shock Rear Suspension is a performance upgrade to your PW50. It creates a new performance dimension by providing a whole new feel in suspension feel just like the characteristic of a full size motocross bike. The best quality and performance available for PW50s. CNC aluminum swing arm and shock mounts one inch longer then stock. Nitrogen charged oil dampened fully adjustable piggy back reservoir rear shock designed for PW50 stock frame. Adjustable spring pre-load, adjustable rebound and adjustable compression make this the ideal choice of rear suspension for all types of riders weights and ability. This Kit will raise your rear end up 1″, so we provide a a front fork triple clamp spacer kit in the $299 package, or you can add a new set of oil dampened leaning axle front forks to really balance out the suspension for an extra $99.

PW50 Aftermarket Single Shock Suspension Kit, with Front Fork Spacers


Price: $339.99
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PW50 Aftermarket Single Shock Suspension Kit, with Aftermarket Front Forks


Price: $479.99
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The TOP END MACHINE PW50 Single Shock Rear Suspension is a performance upgrade to your PW50. It creates a new performance dimension by providing a whole new feel in suspension feel just like the characteristic of a full size motocross bike.

Ready to Order?

Select the part you want made in Carbon Fiber from the drop-down list to the right >

PW50 CARBON FIBER
Price: $69.99
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*NEW* Air Filters - for use with Morini Franco Engines
30mm-60mm I.D.

Click Images for Larger View

30mm I.D. Straight for 19/21mm Carb 35mm I.D. Straight for 19/21mm Carb 35mm I.D. 45° Angle for 19/21mm Carb 60mm I.D. Straight for 14mm Carb 60mm I.D. 45° Angle for 14mm Carb

Price: $19.99
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Price: $19.99
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Price: $19.99
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Price: $19.99
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Price: $19.99
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Yamaha PW50 & PW80 Parts
PW50/PW80 Brake Cable Adjuster & Barrel Set
Price: $14.99
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PW50 / PW80 brake cable adjuster & barrel set.
CNC machined from Aluminum. 1/2 the weight as stock steel parts. No tools required to adjust brakes. Set for both front & rear. Anodized in black or blue color.
PW50 44MM CYLINDER HEAD
Price: $77.99
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*For 60cc Big Bore Kits only.

Complete newly designed, aluminum casted PW50 cylinder head. CNC machined for correct compression ratio and proper dome squish area. Spark plug hole is properly centered for proper ignition firing unlike the standard stock PW50 off-set spark plug.

PW50 Handlebar Riser Set
Price: $32.99
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Are your kid's knees banging the bars? This will fix the problem.

Machined aluminum handlebar riser set will raise up the stock PW50 handlebar about 1 inch or 25 mm higher then the stock position. All the stock cables will be long enough and still reach the levers and throttle assembly.

PW50 HI-PERF TRANSMISSION GEAR
Price: $99.99

Yamaha PW50 special transmission gear designed to give PW50s more low end torque. Works awesome for starts & holeshots.

Replace the standard OEM gear with this special heavy duty, USA-made Top End Machine brand transmission gear. Uses the same gear ratio as the QT50 transmissions, but this gear is located inside the clutch cover making it easier to change than the older rear end QT50 gears. CNC Machined from Billet.

*Since this is a bolt on part, you can always go back to stock if you want to.

PW50/PW80 Oil Injector Block Off Plug
Price: $22.99
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One of the best performance upgrades for the PW50 is installing our oil block off plug. Pre-mixing your oil and gasoline will elimiate the standard oil pump assembly. The oil pump is not accurate most of the time, sending either too much or not enough oil into the engine causing big performance loss. Even worse, an oil-deprived engine will result in premature wear or in many cases extreme engine failure.

Eliminate the risk and gain performance - install our Oil Block Off Plate.

*We recommend using pre-mix Super unleaded quality gasoline at 40:1 ratio with Maxima brand "Super M" premix oil.

PW50/PW80 Wide Foot Peg Set
Price: $34.99
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Switch out your PW50 stock narrow foot pegs with this heavy duty strong and light weight Extra Wide foot Peg kit!

Includes: complete right & left set with springs and pins.

PW80 High Performance Alloy Kickstart Lever
Price: $32.99
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Heavy Duty all aluminum super light weight kick start lever assembly. Designed to be more tucked against engine.
 
KTM50, 65 & 85 Parts
DELLORTO PHBG/SHA MAIN JET
Price: $5.99
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DELLORTO PHBG/SHA PILOT JET
Price: $5.99
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KTM50 Pro Senior Carburetor Jet Splash Guard
Price: $12.99
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Machined from brass and specialty designed to prevent gasoline from splashing around in float bowl during riding. This insert helps eliminate bogging of the engine in the face of jumps or through whoops.
KTM50 Clutch & Flywheel Puller
Price: $29.99
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Remove or install the Clutch assembly or Flywheel with this special puller. This tool will safely pull these parts off your engine.

Please do not try to use any other type of tool to remove these parts. Why? you ask. It's because if you try to use force or pry with other tools you could break or damage something.

KTM50 2009-2014 Piston Stop Tool
Price: $19.99
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Remove or install the Clutch nut or Flywheel nut with this special piston stop. This tool safely keeps the engine from turning over. This allows for the correct torque to be set on these important engine parts.

Please do not use Air Impact Wrench on Clutch nut or Flywheel. Why? you ask. Because you will not know how tight they are. Overtightening can strip threads or even break the crankshaft. If the Air Wrench is too lose, the nut will fall off while the engine is running causing huge damage inside your engine.

KTM50 2002-2008 Piston Stop Tool (Also fits other makes and models)
Price: $19.99
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KTM50 Steel Clutch Spring Washers, 50ct.
Price: $29.99
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Heavy duty USA made Clutch Spring Washers.
These clutch spring washers are very strong and reliable under the most extreme racing conditions.

KTM50 Stainless Steel Clutch Spring Washers, 50ct.
Price: $39.99
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Stainless steel spring washers are considered a performance part, because they are not AMA stock class legal. Many people use these stainless washers because they are much stronger then the normal carbon steel spring washers. They also resist fading better then standard carbon steel spring washers when the clutch heats up. Keep in mind that a these stainless spring washers will use a different stack compared to the standard steel spring washers. USA made STAINLESS STEEL Belleville spring washers.

KTM50 Pro Senior 2001-2014 Aluminum Float Bowl
Price: $46.99
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CNC Billet 6061 Aluminum Float Bowl designed for Dellorto 21mm or 19mm Carburetor.

Available in anodized colors: Silver, Orange, Black, Red
KTM50 Front Brake Lever and Master Cylinder Cap
Price: $34.99
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KTM50 Rear Brake Plate
Price: $33.99
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KTM50 Throttle Tube
Price: $38.99
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KTM50 Chain Blocks
Price: $24.99
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KTM50 Ignition Cover (2009-2014)
Price: $76.99
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KTM65 Ignition Cover (2009-2014)
Price: $76.99
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KTM50 Valve Stem Cap (Orange)
Price: $12.99
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KTM50 Valve Stem Cap (Red)
Price: $12.99
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KTM50 GAS TANK VENT TUBE
Price: $12.99
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Out of Stock
 
KTM50/KTM65 2009-2014 Water Pump Drive Gear
Price: $29.99
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CNC Billet 6061 Aluminum Billet Water Pump Drive Gear for KTM 50 & 65 2009-2014

KTM85 2003-2014 Water Pump Drive Gear
Price: $29.99
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CNC Billet 6061 Aluminum Billet Water Pump Drive Gear for KTM 85 2003-2014