YOUR GUIDE TO THE HONDA TRX 250R      (page 1 of 3)

(Most TRX 250R Components will work for 85-86 ATC 250R. Contact DRI for Info)
*Paul Turner Racing Engines are a proprietary brand of DRI. All PTR engine modifications are done exclusively by DRI.

ENGINE

DRI Honda TRX 250R National Kit

ENGINE KITS

(stock OEM cylinder)

DRI Honda TRX 250R  NATIONAL  Kit      

#EK-10NT     $1399.00

Not available online- Please call DRI to purchase

Includes: PTR Midrange RACE Pipe, Fat Boy 2 Silencer, NATIONAL Midrange Porting, Powerhead, Pyramid Reed Valve, Pre-Jetted Keihin 36mm PJ Carburetor, Jet Kit, K & N Filter, Outerwear, T-Shirt, Instructions, DR Tech Support,


·          Price plus any necessary machining and or parts. Example: Boring, Gaskets, Pistons, etc.  Is additional cost.

·          Throttle and or throttle cable not included

·          Pipe comes with factory finish. Chrome Plated version available at additional cost

Power Curve (2) Options For each Kit:
Cross Country (Low End Power Emphasis)
Midrange (Midrange Power Emphasis)

Pipe Options: Type 6 (low end), RACE (midrange), ELIMINATOR (mid/top combo)

Porting Options: XC, Midrange .      

Multiple Compression Options (Powerhead has interchangeable domes, offered in various sizes)

Cores Required: Cylinders

Customer must send in their cylinder to DRI for porting modification or purchase new.

Recommended Additions:

DRI Clutch Kit   

#DR-C12         $189.00

To purchase the Clutch Kit click here

Hinson Billet Clutch Basket                       

#H014             $230.00

To purchase the Clutch Basket click here

Upgrade Options:      

Keihin 39mm PWK Carburetors                                                       add   $25.00
Pipe Chroming                                             #CP-900N                              $120.00
DR Flywheel Mod                                         #MS-5000                              $75.00
SUPER FLOW Carb Mod                              #MS-FLOW                            $60.00
Carb Bore & Super Flow                              #MS-CBSF                             $90.00

Performance: 50% Upgrade over stock
Reliability:    85% of stock reliability

Application Recommendations:
XC/Low End: Cross Counrty/Tight Woods Riding and or Racing
Midrange: Motocross, Sand Dune Riding, Trail Riding, Gran Prix Races,

*Best Overall PowerBand

Notes: The DRI/PTR  NATIONAL kit is an outstanding buy for overall performance gain, reliability and value. While still maintaining the usage of stock OEM cylinder.

This kit stays with stock displacement to maintain the highest possible reliability. The size of this kit is not what makes it so appealing. It is the proven combination of the pipes, porting, reed cages, carbs etc. working together.

DRI Honda TRX 250R ELIMINATOR Kit          

#EK-10EL         $1399.00

Includes: PTR ELIMINATOR Pipe, Fat Boy 2 Silencer, NATIONAL ELIMINATOR Porting, Powerhead, Pyramid Reed Valve, Pre-Jetted Keihin 39mm PWK Carburetor, K & N Filter, Outerwear, Instructions, DR Tech Support,

·          Price plus any necessary machining and or parts. Example: Boring, Gaskets, Pistons, etc.  Is additional cost.

·          Throttle and or throttle cable not included

·          Pipe comes with factory finish. Chrome Plated version available at additional cost

Power Curve: Midrange Top End Combination
Pipe Options:  ELIMINATOR (mid/top combo), HIGH REV (top end)
Porting Options: ELIMINATOR.      
Multiple Compression Options (Powerhead has interchangeable domes, offered in various sizes)

Cores Required: Cylinders

Customer must send in their cylinder to DRI for porting modification or purchase new.

Recommended Additions:

DRI Clutch Kit                                           

#DR-C12            $189.00

To purchase the Clutch Kit click here

Hinson Billet Clutch Basket                            

#H-014               $230.00

To purchase the Clutch Basket click here

Upgrade Options:

Pipe Chroming                                              #CP-900N                               $120.00
DR Flywheel Mod                                          #MS-5000                               $75.00
SUPER FLOW Carb Mod                                #MS-FLOW                            $60.00

Performance: 50% Upgrade over stock
Reliability:    85% of stock reliability

Port Option: Kit may also be ordered with PTR HIGH REV porting. This will make kit a HIGH REV Kit for maximum High RPM applications, such as Drag Racing, Hill Racing etc.

Application Recommendations:

ELIMINATOR: Excellent Dual Sport type riding, Motocross, Trails, Sand Dunes,

Very Versatile

HIGH REV: Drag Racing, Hill Racing, large TT’s and Flat Tracks

Notes: The DRI/PTR ELIMINATOR kit is an excellent choice when multi riding options are used, strong overall performance gain, reliability and value. While still maintaining the usage of stock OEM cylinder.

This kit stays with stock displacement to maintain the highest possible reliability. The size of this kit is not what makes it so appealing. It is the proven combination of the pipes, porting, reed cages, carbs etc. working together.

PC-2000 Power Valve Cylinder Kit

PC-2000 POWER VALVE CYLINDER KITS

• 305cc and 340cc Nikiski PC 2000 Cylinders require center case machining
• DRI offers center case machining for $150.00. Cases must be disassembled.
• DRI can also rebuild/refurbish any engine and install PC 2000 kit at additional cost

PC-2000 Power Valve Engine Kit

PC-2000 POWER VALVE ENGINE Kits

265cc PC 2000 Engine Kit             #PC-222550            $2595.00
275cc PC 2000 Engine Kit             #PC-223050            $2595.00
305cc PC 2000 Engine Kit             #PC-223400            $2695.00
340cc PC 2000 Engine Kit             #PC-220340            $2695.00

PC 2000 Engine Kits Include: PC 2000 Cylinder Kit, PTR Pipe, Fat Boy 2 Silencer, Pre-Jetted Keihin Carburetor, Jet Kit, Pyramid Reed Valve, K&N Filter, Outerwear, T-Shirt, Instructions, DR Tech Support

Power Curve/Port Options: Midrange or Top End Top

Pipe Options: TYPE 6 Pipe (low end) RACE Pipe (midrange), ELIMINATOR Pipe (mid/top combo), HIGH REV Pipe (top end)

Carburetor Options: Keihin 36mm, Keihin 37.3mm, Keihin 39mm PWK.

Multiple Compression Options (PC 2000 has interchangeable domes, offered in various sizes)

Cores Required: Cylinders: None.

Recommended Additions:

DRI Clutch Kit                                        

 #DR-C12                                 $189.00

To purchase the Clutch Kit click here

Hinson Billet Clutch Basket

#H-014                                      $230.00

To purchase the Clutch Basket click here

For 340cc Kits the following 8-Plate System is Highly Recommended

Hinson 8-Plate Clutch Basket                        #H130                                    $230.00
Hinson 8-Plate Inner Hub                              #H129                                    $299.00
Hinson 8-Plate Pressure Plate                      #H138                                    $175.00
DR 8-Plate Clutch Kit                                    #DR-C128                               $169.00

* To use 8-Plate clutch kit a Quick Change Clutch cover must be used for necessary clearance.

Upgrade Options:               
Pipe Chroming                                           #CP-900N                                  $120.00
DR Flywheel Mod                                      #MS-5000                                   $75.00
SUPER FLOW Carb Mod                            #MS-FLOW                                $60.00

265cc/275cc Kits

Performance: 55-60% Upgrade over stock
Reliability:    90-95% of stock reliability

PC 2000 Application Recommendations:

265cc is legal in ATVA 250cc class for MX, TT & XC Series.
Midrange- MX and XC.
High Rev –TT and Flat Track

275cc is the best all around PC cylinder. Power is Great, Reliability is Fantastic, is some case more reliable than stock.

Midrange: Trails, XC, Sand Dunes Great All Around.
High Rev: Drag Racing, Hill Shooting, TT and Flat Track

* The 275cc is the largest PC cylinder that bolts onto stock lower end without modifications.

305cc Kits

Performance: 60-65% Upgrade over stock
Reliability:    85% of stock reliability

305cc is the a good all around PC cylinder. Power is Great,  reliability is very good because of Nikasil coating. Similar power feel to 275cc but with  more low –Midrange torque. The 305cc is easier to ride than the 340cc power is more rideable.

Midrange: Trails, XC, Sand Dunes,Great All Around.
High Rev: Drag Racing, Hill Shooting, TT and Flat Track

* Centercase machining is required

340cc Kits

Performance: 60-65% Upgrade over stock
Reliability:    80% of stock reliability

340cccc is a very powerful  PC cylinder. Power is Very Strong with excellent  Reliability for a cylinder of this size (Nikasil improves cooling and piston life). Power has very similar feel to 500cc 2-Strokes. Performs its best when short shifted and not revved out hard like smaller engines. This cylinder requires a lower end that is in excellent working condition. HD Trans gears and 8-Plate clutch are recommended but not mandatory

Midrange: Trails, XC, Sand Dunes Great All Around.
High Rev: Drag Racing, Hill Shooting, TT and Flat Track

* Centercase machining is required

*Note: Reliability is rated assuming that remainder of engine is good/excellent-working condition. Performance numbers will vary depending on pipe, carb etc. used

NOTES: The PC 2000 Power Valve Cylinders are a proprietary product designed and manufactured exclusively by DRI. They are designed as the top of the line elite engine package. No other engine kits offer more ride able, reliable horsepower than the PC 2000.

With the (4) Cylinder size options, (2) Port Options, (4) PTR Pipe Options, (3) Carburetor Options. DRI can assemble an engine kit that will shine in any riding application.

When ordering a PC 2000 Kit all clients deal with a senior DRI tech to ensure that they are matched with the proper components for their needs.