Honda TRX250R Parts and Accessories
This page is dedicated to TRX250R Parts and Accessories (ATC250R). If you are looking for performance you have come to the right place! We’ve been racing and modifying the R motor since they were air cooled. We carry pistons, rods, reed cages, performance cylinders, heads, clutches, and so much more. We also specialize in many performance modifications and services. We offer porting, head mods, crank work, dyno tuning, and even complete motor building services. So if you don’t see it here then give us a call or email us.
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CT Racing National Porting Kit……$575.00
Kit Includes: CT Racing port work, cylinder decking, head re-chambering, modified piston kit, and top end gasket set. |
Call for more details. |
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CT/Pro-X 310cc PV Package……Starting at $2495.00 |  |
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CT/Pro-X 330cc Package…… | |
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CT/Pro-X 350cc Package….. | |
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CT/Pro-X 350cc Power Valve Package……Starting at $2600.00 | |
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CT/Pro-X 370cc Power Valve Package……Starting at $2750.00 | |
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| Description | Price | Photo |
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| TRX250R Midrange Pipe and Silencer – The midrange “National” pipe produces a very smooth, wide power curve. This is the best all around pipe ever made for the 250R. | $549.95 |
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| TRX250R Power Valve Pipe and Silencer – The PV pipe is a mid to top end pipe, extremely fast on the big end, a great rev duner type pipe, excellent for top-end flat track racing. | $549.95 |
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| TRX250R Silencer – Fits all TRX250R pipes | $170.95 |
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| ’85-’86 ATC250R Midrange Pipe and Silencer – The midrange pipe produces a very smooth, wide power curve. This is the best all around pipe ever made for the ATC250R. | $549.95 |
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| Cylinder Bore and Chamfer Ports | $100.00 | |
| PV Cylinder Bore and Chamfer Ports | $115.00 | |
| Port, Deck, and Re-Chamber Head | $375.00 | |
| Crankshaft Rebuild (Labor Only) | $100.00 | |
| Machine Cases for Big Bore Cylinder 330/350 | $150.00 | |
| Counter Balancer Rebuild (Parts & Labor) | $85.00 | |
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Dura Blue Foam Air Filter – Fits stock airbox. |
$51.76 |
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K&N Air Filter – We carry both TRX250R and the ATC250R Filters. Fits stock airbox. |
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| Outerwear Pre-Filter – Fits K&N Air Filter HA-4250. | $16.95 |
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| Pro-X 250 Ported Cylinder Kit – Kit includes CT ported cylinder with Bridged Exhaust, interchangeable dome head with choice of dome, piston kit, and top-end gasket set (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). | Call for $ | |
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Pro-X 310 Ported Cylinder Kit – Kit includes CT ported cylinder with Bridged Exhaust, interchangeable dome head with choice of dome, piston kit, and top-end gasket set (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). |
Call for $ |
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Pro-X 310 Ported Power Valve Cylinder Kit – Kit includes CT ported cylinder with Bridged Exhaust, interchangeable dome head with choice of dome, piston kit, and top-end gasket set (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). |
$1695.00 |
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Pro-X 330 Ported Cylinder Kit – Kit includes CT ported cylinder with Bridged Exhaust , interchangeable dome head with choice of dome, piston kit, and top-end gasket set (case machining required) (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). |
Call for $ |
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Pro-X 350 Ported Cylinder Kit – Kit includes CT ported cylinder with Bridged Exhaust, interchangeable dome head with choice of dome, piston kit, and top-end gasket set (case machining required) (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). |
Call for $ | |
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Pro-X 350 Ported Power Valve Cylinder Kit – Kit includes CT ported power valve cylinder, interchangeable dome head with choice of dome, piston kit, and top-end gasket set (case machining required) (87-89 long rod cranks require the use of a spacer plate – $45.00 extra). |
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’86 TRX250R Pro-X Piston Kit – Available in 66mm-68mm bore. |
$129.34 |
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’86 TRX250R Wiseco Piston Kit – Available in 66mm-69.50mm bore. |
$175.10 |
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| TRX250R 295 Big Bore Piston Kit – Available in 72mm-73.50mm bore. | |
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| TRX250R CT310 Big Bore Piston Kit – Available in 72mm-73.50mm bore. | |
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| TRX250R CT330 Big Bore Piston Kit – Available in 76mm-78mm bore. | |
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| TRX250R CT350 Big Bore Piston Kit – Available in 78mm-79mm bore. | |
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| TRX250R Pro-X 250/310/330/350 Top-End Gasket Set – To be used with any CT or Pro-x Cylinder | $48.95 |
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| TRX250R Cometic 68mm Top-end Gasket Set – Note: To be used with stock cylinder ONLY | $36.80 |
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| TRX250R Cometic 68mm Top-end Gasket Set with CR Style Head Gasket – This is a great little hop up trick for a stock 250R. This head gasket is paper thin at only .011 thick. It actually would raise the compression a bit too much for pump gas, so we supply two base gaskets raising the cylinder up slightly. This acts like mild porting. It sets the compression for pump gas and picks up about 4 HP with a wider power curve and more bottom-end power. | $48.95 |
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| TRX250R Winderosa Complete Gasket Set and Seal Kit – This complete engine gasket set also includes all of the engine oIl seals – crank, kickstart, countershaft, and ETC. Winderosa Gaskets are extremely high quality US made gasket sets. | |
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| TRX250R/ATC250R Wrist Pin Bearing | $15.95 |
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| ’86 TRX250R/’85-’86 ATC250R Hot Rods Connecting Rod – Available in stock stroke. | |
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| ’87-’89 TRX250R Hot Rods Connecting Rod – Available in stock stroke. | |
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| ’86 TRX250R/’85-’86 ATC250R Hot Rods Crank – Available in Stock Stroke only. Includes wrist pin bearing. Main bearings not included. | |
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| ’87-’89 TRX250R Hot Rods Crank – Available in Stock Stroke and +4mm Stroker. Includes wrist pin bearing. Main bearings not included. | |
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| ’86 TRX250R/’85-’86 ATC250R Hot Rods Complete Bottom End Kit – Available in Stock Stroke. This kit includes main bearings, seals, gaskets, and crank. | |
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| ’87-’89 TRX250R Hot Rods Complete Bottom End Kit – Available in Stock Stroke or +4mm Stroker. This kit includes main bearings, seals, gaskets, and crank. | |
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| Cylinder Spacer Plate – Available in Polished, Red, or Blue | $45.00 |
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| Water Pump Cover – Available in Polished, Red, or Blue | $51.95 |
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| Delta V-Force Reed Cage – The V-Force reed valve system is by far one of the most effective bolt-on performance products you can ever install on your ATV. Gain an average of 3HP in the bottom and midrange, and significant boost in throttle response. | |
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Quick Change Clutch Cover – Unpolished
(core charge $225.00) |
$399.00 |
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Quick Change Clutch Cover – Polished
(core charge $225.00) |
$475.00
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| Hinson Billetproof Clutch Basket | |
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| Hinson Clutch Kit – Includes Fibers, Steels, & Springs | |
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Keihin 38PWK Air Striker Carburetor – Comes pre-jetted. |
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Keihin 39PWK Carburetor – Comes pre-jetted. |
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UPP Intake Manifold – Fits 38 to 39mm carburetors. Allows you to adapt larger carbs to your ATV. |
$110.95 |
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| Fasst 1-1/8″ Flexx Bars – These are the best off road bars money can buy. Bars come with three different elastomers to get the proper cushioning for your type of riding along with a cross bar pad in your color choice of blue, grey, or red. Please Note: 1-1/8″ bar mount kit is required. | $389.95 |
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Fly Aero Taper 1-1/8″ Fat Bars with Bar Pad – Bars are available in black, gun metal, or silver. Please Note: 1-1/8″ bar mount kit is required. |
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Fly Universal 1-1/8″ Handlebar Mount Kit – This is a clamp set than converts your stock 7/8″ bar clamp to the 1-1/8″ Fat Bar set up. Can be used with any brand 1-1/8″ bars. |
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Streamline Reflex Pro Pack with Clutch and Brake Lever – Available in Black, Blue, Red, and Orange. |
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Streamline Steering Stabilizer 7-Way Adjustable Non-Rebuildable – Available in Silver, Red, Blue, or Black. |
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Streamline Steering Stabilizer 7-Way Adjustable Rebuildable – Available in Silver, Red, Blue, or Black. |
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Streamline Steering Stabilizer 11-Way Adjustable Rebuildable – Available in Silver, Red, Blue, or Black. |
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Streamline Steering Stabilizer Carbon 11-Way Adjustable Rebuildable – Available in Silver, Red, Blue, or Black. |
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| Pro Design Tether Kill Switch – Available in Black, Blue, or Red | $36.95 |
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| CV4 Billet Tether Kill Switch Mount – Handlebar mount for Pro Design and Pro Armor tether kill switches.This mount allows you to mount your switch to the bar without using up all of the spacing. Allows you to mount the switch much closer to the bend. Available in Black and Red. | $49.95 |
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| Streamline Steel-braided Front Brake Line Kit – (Please specify color & length) Available in black, blue, clear, green, red, or smoke. Some colors and lengths may need to be special ordered. | |
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| Streamline Steel-braided Rear Brake Line – (Please specify color & length) Available in black, blue, clear, green, red, or smoke. Some colors and lengths may need to be special ordered. | |
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| Billet Brake Line Clamp – 1 pair (Please specify color) Can be used with any 3/4″ or 1″ diameter A-arm. Available in black, blue, red, or silver. | |
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Lone Star Racing Anti-vibration Steering Stem – Available in +1″ exteneded length and 7/8″ or 1 1/8″ Handlebar clamps included. |
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Laeger’s Anti-vibration Steering Stem – Available in +1″ or +2″ exteneded length and 1 1/8″ Handlebar clamps included. |
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| CT Racing Carbon Fiber Hood Available in Blue or Black | $219.00 | |
| CT Racing Carbon Fiber Radiator Shrouds (set) – All Years Available in Blue or Black | $219.00 | |
| CT Racing Carbon Fiber Radiator Shrouds, Hood Kit (black) | $419.00 | |
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| Lone Star Racing Axcaliber Axle – Axcalibar Pro Racing Axles are one of the most highly recommended axles on the market for both racers and recreational riders. | |
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| Lone Star Racing Dual Row Bearing Carrier – The billet aluminum bearing housings are machined from 6061 aluminum for superior housing strength. | |
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| Dura Blue Heavy Duty Axle – This axle is a recreational level axle that is twice the strength of the stock axle. It’s a cost effective choice when reliability is a prime concern. | |
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| Dura Blue Eliminator 2+2 Extended Axle – The Eliminator axle used for all forms of racing and high performance applications. Many of the models come with the patented Posi•Lock system which removes threaded sections from the flexing area of the shaft (a source of crack generation). | |
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| Dura Blue Eliminator X-33 Pin Drive Axle with Cast Hubs – The X-33 axle uses the same superior material and heat treating as the Eliminator. The unique difference is in the design of the wheel hub mounting area. Standard design ATV axles neck down to about 1″ in diameter. A splined wheel hub slides onto the axle shaft and is retained with a hex nut. As all ATVer’s know, hubs loosen frequently. The X-33 changes all that. The wheel hub is clamped solid and driven by a pin on a 1-3/8″ diameter shaft. This axle is rifled to reduce weight near the rotational axis of the ATV. The X-33 allows for 16 different wheel offset alternatives. | |
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| Dura Blue Eliminator X-33 Pin Drive Axle with BILLET Hubs – This X-33 axle uses the same design, superior material and heat treating as the X-33 w/ cast hubs. The unique difference is in the wheel hub and that they are billet aluminum for superior strength. |  |
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