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The Official Duncan Racing ATV Buyers Guide


YOUR GUIDE TO THE KAWASAKI KFX400

 

ENGINE

S-1 Kit

BOLT-ON KITS

STAGE 1 Kit (S-1) 

#BK4-2Z40   $692.00

Includes: Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear)

To purchase the Stage 1 Kit click here

Excellent Start Up Performance Mods. Stage 1 Power Kits are designed to work with most DRI engine kits. For a slightly more aggressive Bolt-On kit check out the DRI stage 2 S-2 HPV Bolt Kits.

S-2 Kit

STAGE 2 Kit (S-2)  Kit

#BK4-2Z4-VHP   $1239.00

Includes:
S-1 Bolt on Kit (Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear), Vortex X10 CDI, DRI Graphic & Seat Cover Kit.

To purchase the Stage 2 Kit click here

Power Gains:
15-20% gain in HP
*Choice of Graphic and Seat cover color where applicable.
(White/Blue, White/Yellow)

 

435cc National Kit

Engine Kits: 435cc NATIONAL Kit                                  

#EK-24NT-43     $1995.00

Not available online- Please call DRI to purchase

Includes:
Fat Boy 4 Complete Exhaust System, 435 Piston kit, Cylinder Bore and ReNikasil, Steel head gasket Camshafts, HD Valve Springs w/Titanium Retainers, Shortened Bronze Guides, DR Head Porting (with guides out), 3-Angle Valve Job, Instructions, DR Tech Support.

· Price plus any necessary parts. Example: Guide Seals, Valves, Gaskets, etc. Is additional cost.

*Kit price with Vortex X10 CDI and Edelbrock Carburetor Kit $ 2895.00

Power Curve Camshaft Profile Options;
        Midrange Camshafts # 327-X94
        Top End Camshafts # 327-X510

Porting: Flow Tested Design done in house by DRI Technicians. Intake Manifold Matched

Compression: 12-1

Cores Required: Cylinder, Head, Camshafts, and Intake Manifold
Customer must send in their cylinder to DRI for porting modification or purchase new.

Clutch Kit & Basket

Recommended Additions:
DR Clutch Kit ('03-'04)                              #DR-C24        $175.00

DR Clutch Kit ('05)                                   #DR-C2405     $189.00
Hinson Billet Clutch Basket
('03-'04)         #H-095          $230.00

Hinson Billet Clutch Basket ('05)              #H-252          $230.00

Pro Flow Air Filter Kits
(Billet A/C Flange, K&N Filter, Outerwear)   #PD-220           $129.95
(Billet A/C Flange, Uni Foam Filter)            #PD-221             $99.95 

Edelbrock Carburetor Kit

Upgrade Options:

Keihin 40mm FCR Carburetor            #K-FCR40-ST        $599.00
Edelbrock Carburetor Kit (thumb)       #3157                    $445.95
Edelbrock Carburetor Kit (twist)         #3158                    $445.95
Vortex X10 Ignition ('03-'04)               #VT-2400               $399.00

Vortex X10 Ignition ('05)                    #VT-4705               $399.00

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

Application Recommendations:
XC/Low End: Cross Country/Tight Woods Riding and or Racing

Midrange: Motocross, Sand Dune Riding, Trail Riding, Grand Prix Races,
*Best Overall Power Band

Notes: Great combination for Performance, Reliability and Value

 

470cc NATIONAL Kit                                         

#EK-24NT-47           $2495.00

Not available online- Please call DRI to purchase

470cc National Kit

Includes:
Fat Boy 4 Complete Exhaust System, Stroker Crankshaft, Forged Piston kit, Cylinder Bore and ReNikasil, Steel Head gasket Camshafts, HD Valve Springs w/Titanium Retainers, Shortened Bronze Guides, DR Head Porting (with guides out), 3-Angle Valve Job, Instructions, DR Tech Support.

· Price plus any necessary parts. Example: Guide Seals, Valves, Gaskets, etc. Is additional cost.
· Complete engine must be disassembled to remove stoke crankshaft and install stroker crankshaft. DRI offers this service at an additional price. ($495.00 +parts)

*Kit price with Vortex X10 CDI and Edelbrock Carburetor Kit $ 3395.00

Power Curve Camshaft Profile Options;
        Midrange Camshafts # 327-X94
        Top End Camshafts # 327-X510

Porting: Flow Tested Design done in house by DRI Technicians. Intake Manifold Matched

Compression: 12-1

Cores Required: Cylinder, Head, Camshafts, Intake Manifold, and Crankshaft
Customer must send in their cylinder to DRI for porting modification or purchase new.

Recommended Additions:
DR Clutch Kit ('03-'04)                                     #DR-C24                      $175.00
Hinson Billet Clutch Basket ('03-'04)               #H-095                         $225.00

Pro Flow Air Filter Kits
(Billet A/C Flange,K&N Filter, Outerwear)          #PD-220                         $129.95
(Billet A/C Flange, Uni Foam Filter)                   #PD-221                          $99.95

Upgrade Options:

Keihin 40mm FCR Carburetor                          #K-FCR40-ST                 $599.00
Edelbrock 36mm Carburetor Kit (thumb)           #3157                            $445.95
Edelbrock 36mm Carburetor Kit (twist)             #3158                            $445.95
Edelbrock 38mm DE Carburetor Kit                                                          Call
Vortex X10 Ignition ('03-'04)                             #VT-2400                        $399.00

Vortex X10 Ignition ('05)                                  #VT-4705                        $399.00

Performance: 65% Upgrade over stock
Reliability: 75% of stock reliability

Application Recommendations:
Great Open Class motor, Strong overall power band.
Great for Track or Trail

Notes: Clutch upgrade is mandatory on this kit. A skilled technician must install Kit

 

INDIVIDUAL ENGINE COMPONENTS (all items may be purchased separately)

 

FAT BOY 4 Complete Stainless Exhaust System               

#FB4-ESZ400          $599.00

To purchase the Fat Boy 4 click here

FAT BOY 4 HQ Complete Stainless Exhaust System
#FB4-ESZ400-HQ      $649.00

Features: 30% larger volume, redesigned packing and core. Reduces sound output by 3-4 dB.

To purchase the Fat Boy 4 click here

FAT BOY 4 HQ Muffler 

#FB4-HQSZ400        $269.00

*Replaces standard Fat Boy 4 muffler on existing exhaust system.

Fat Boy 4
Fat Boy 4

Optional Fat Boy 4 Accessories:
Turndown (bolts on w/o-ring)             #FB4-4A250             $39.95
Spark Arrestor (requires turndown)    #06-554                    $17.95

QP-2 Quiet Tip

#FB4-QP-2   $129.95

Bolts on rear end cap of Fat Boy 4.

Lowers DB readings a minimum of 2-3 dbs.

Forestry approved when used with screen.

* Note: Some rejetting may be required.

** Available in silver only
To purchase the QP-2 Quiet Tip click here

QP 2 with screen
Fat Boy 4 with QP-2

To purchase Fat Boy 4 Accessories click here

To purchase Fat Boy 4 Replacement Parts click here

 

Custom Colored FAT BOY 4 Mufflers

Custom anodized color components (muffler, end cap & turndown) are at an additional cost to the base price for the Fat Boy 4 and the components (Turn down & End cap).

*Available by special order only

**Lead time can be 1-2 weeks
Fat Boy 4 mufflers are available in a Black, Red or Blue anodized finish.
Muffler bodies, rear end caps or turndowns are available colored individually or as a complete package.
*DRI cannot guarantee colored anodized mufflers will not fade over time.


Purchase Options :

FB4-A3PCO       $129.95    3-piece package; Muffler, End Cap and Turndown
FB4-A1ECO        $24.95     End Cap ONLY
FB4-A1TDO        $24.95     Turndown ONLY
FB4-A1MFO        $89.95
     Muffler ONLY

**Custom Color prices are in addition to the regular Fat Boy 4 price

Example: KFX 400 Fat Boy 4 Complete Exhaust System-         $599.00

               Custom Colored 3-piece package                  +         $129.95

               Total cost with color option                           =         $728.95

Custom Black
Custom Blue
Custom Red
Custom Colored End Caps
Custom Colored Mufflers
Custom Colored Turndown

 

435cc Kits       $399.00
(12-1 Forged Piston, Steel head gasket, Bore & ReNikasil)
Replacement Head gasket                              #H1045027S           $35.00

Camshafts
        
Midrange Intake: .385" lift/248 duration        #327-X94H              $309.00
        Exhaust: .370" lift/252 duration

        Top End Intake: .427" lift/257 duration         #327-X510H             $309.00
        Exhaust: .385" lift/252 duration
*Customer must send in stock camshafts, or pay core charge

 

 

HD Valve Springs

Valve Spring Kits

HD Valve Springs & Titanium Retainers    #60-60045      $165.00

Shortened Bronze Guides                         #60-6060        $19.95 ea

 

 

Keihin 40mm FCR Carburetor-             

#FCR40-ST       $599.00

 

Edelbrock Carburetor Kit

Edelbrock Carburetor Kits (36mm)


Edelbrock Carburetor Kit (thumb)                    

#3157              $445.95


Edelbrock Carburetor Kit (twist)                      

#3158              $445.95

*Call for 38mm DE model Car

X10 Ignition

VORTEX IGNITIONS

Vortex X10 Ignition

('03-'04)      #VT-2400         $449.00

Vortex X10 Ignition

('05)           #VT-2405         $449.00

To purchase the Vortex Ignition click here

 


Pro Flow Air Filter Kits
   (Billet A/C Flange,K&N Filter, Outerwear)    
#PD-220          $129.95

(Billet A/C Flange, Uni Foam Filter)                    

#PD-221            $99.95

To purchase the Pro Flow Air Filter Kit click here

Pro Flow Air Filter
Pro Flow Air Filter

 

Clutch Kit & Basket

HINSON Billet Clutch Basket ('03-'04)

#H095                  $225.00

 

DR HD Clutch Kit   ('03-'04)                            

#DR-C24               $175.00
(Fiber,Steel & HD Spring Kit)

DR HD Clutch Kit   ('05-'06) 

#DR-C2405            $189.00

To purchase the DR Clutch Kit click here

 



ENGINE SERVICES

Engine Rebuilding

Complete Engine Rebuilding (Tear down & Reassembly)        $650.00

Head Port and Valve Job (includes R & R guide)                    $495.00

3-Angle Valve Job                                                                $140.00

Cylinder Sleeve Install, Bore, Surface                                  $195.00

Flywheel Mod                                                                         $85.00

*ALL ENGINE SERVICE PRICES PLUS PARTS.


CHASSIS

LOBO II Suspension Kit

LOBO II Front Suspension Kits          
#RD-LB240F     $2995.00
Includes:
Lobo A-Arms, Axis or ELKA shocks, Tie Rods, CROWN Brake Lines)
Upper & Lower A-Arms come powder coated.
For chrome plated upper arms add $150.00.  


SWINGARM

Roll Design Swingarm                           
#RD-SW40
           $1395.00

Chain slider   add    $90.00
* Must purchase round housing carrier at additional cost


Elka Rear Shock

ELKA REAR SHOCK

Elite/ Dual Rate     from     $795.00


Elka Rear Linkage
     

#EL-40LK            $265.00

 

GPR STEERING STABILIZERS

GPR Low Boy V-1 ATV Stabilizers are available in Standard and Remote.                           
GPR’s Low Boy Remote includes an adjustable handlebar mounted adjuster- for adjustment on the fly. 
V-1 series offers Hi-Lo speed adjustment simultaneously. 360° of adjustment.        
Stabilizers and mount kits are made from aircraft 6061 T-6.                                                       *Standard Low Boy Stabilizers are available in Red, Blue, or Black anodizing.                                      
**Remote Stabilizers available in Black only
*Mount Kits available in Black only
           

GPR Standard Low Boy

#GPR-2Z40-LB   $450.00

To Purchase the GPR STD Low Boy Remote click here

STD GPR Low Boy
Dampners Color Choices

GPR Low Boy Remote

#GPR-2Z40-LBR   $495.00

To Purchase the GPR Low Boy Remote click here

GPR Low Boy Remoter
Low Boy Remote Handlebar Dial

 


Roll Design Steering Shaft                        

 #405201     ('03)          $349.95

 #405201-T  ('04-'06)     $349.95
(Chrome, Cast Stainless Head)
(Standard [stock bars] or Extended [T2 M/C type bar] Length)


Anti-Vibe Handlebar Mount Kit
 (std 7/8 or oversized 11/8)  

$89.95


DR Chrome Bumper

DRI Chrome Front Bumper                          

#DR-2Z40            $179.00

To purchase the Chrome Front Bumper click here

 

 

 

"CROWN" Series Brake Lines (std or +2")
Front (std)                                           #CR-5200            $109.50   
Front (+2")                                          #CR-5225            $109.50
Rear                                                   #CR-5250              $39.95
(Color Options: Red, Blue, Yellow, Smoke, Clear, Green)

 

ROLL ATV Foot Pegs

ROLL ATV Foot Pegs              

#305201-K           $239.00

 

TEAM FIRESTICKS AXLES +3                       

#TM-0201-2201     $449.00

*Uses stock OEM hubs (not included)
**TEAM has discontinued axles that use their rear wheel hub.
Replace hubs are still available in limited quantities. Call for Details
*** Starting in mid ’07 TEAM has built all of their axles to use stock OEM rear wheel hubs.

 

TEAM Rear Bearing Carrier    

#TM-930672                          $249.00



Billet Front Hubs

Billet Front Hubs (pr)                                                             
$339.00
(Hub Cap colors: silver, red, black, blue)




Axle Upgrade Kit

AXLE Upgrade Kit                                                                 

$825.00
(upgrades LTZ Rear End to 250R Rear End)
Includes: Axle, 250R Braking Disc, 250R Rear Caliper, and R. Disc Bolts

 

 

Skidplates
Swing Arm         #04-2525               $94.95
Glide Plate        #04-3525              $109.95

 

BRAKING Rotors
Front WAVE      #DF894W                        $130.00
Rear WAVE       #DR048W                        $130.00

 

BRAKING Brake Pads (sold each caliper)
Front          #703                                     $29.99
Rear
          #686                                     $29.99

 

ELKA Front Shocks (for stock a-arms or other brand)
Replacement Model (no Reservoir, dual rate)          from  $515.00
Sport Model (Piggy Back, dual rate, comp adj.)       from   $745.00

 


ACCESSORIES

TAG Handlebars                                

Oversized T2 Bars                       $94.95
Stock style X5 Bars                     $79.95

 

Motion Pro
CR Throttle and Cable  (stk carb)              

 #01-0563      $41.20


Vortex Throttle and Cable (stk carb)
          

#01-0562       $65.00 

Clutch Cable    

#04-0229        $34.50                                                           

 

Chain Guard

Chain Guard                                              

 #DR-24CG     $29.95
(silver, red, black, green, gold)

 

 

Chain Guard

 

 

 

Billet Shifter

Billet Shifter

#DR-2ZAS            $89.95





 

IMS Tank

IMS 4.0 gal Tank  (white, natural, black, yellow)                                     

#12-5511             $225.00



 


Nerf Bars

Aluminum Nerf Bars
STD                                                    #DR-4525            $189.95
Pro Pegs w/Heel Guards                    #DR-5525            $309.95


Aluminum Grab Bar                     

#GB-1525            $59.95

 

Shrouds Bolt-On

Shrouds Bolt-On                                       

#SK-128-ADB       $69.95

 

 

C/S Sprocket (14,15,16)                             

#SR-CS24            $26.95

 

Shock wears                                                                         

$599.00 set


Graphic Seat Cover Kit- Green


DRI/ONE Graphic & Seat Cover Kit

Green          #DR-DUNK-GR       $119.00

To purchase the Graphic & Seat Cover Kit click here

 

 

 

Rear Fender Decal Strips
"4-Stroke" Red           
      #DR-RF-D45-R           $18.95

"4-Stroke" Blue           
      #DR-RF-D45-B           $18.95

"4-Stroke" Silver/Red        #DR-RF-D45-SR         $18.95

"4-Stroke" Silver/Blue       #DR-RF-D45-SB         $18.95

To purchase the Rear Fender Decals click here

          

   

    

 

DR Number Plates (3pc set)

** Please Note: These are the DECAL BACKGROUNDS and not the plastics
        

WHITE            #DR-850                          $24.95
BLACK            #DR-825                         $24.95
RED                #DR-840                          $24.95
BLUE              #DR-830                          $24.95

YELLOW         #DR-835                          $24.95

GREEN            #DR-827                          $24.95      
To purchase the Number Plates click here

Red
Black
White
Blue
Yellow
Green