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DRI BUYERS GUIDE - HONDA TRX 450R
Prices subject to change without notice

Easy Installation · Unlimited Tech Support · Excellent Start Up Performance Mods.


#BK4-4450 ('04-'05) $699.00  
#BK4-4456 ('06-'09) $711.00  
·INCLUDES: Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear)

·PERFORMANCE GAIN: 5+HP

·INSTALLATION: 1-2 hours

Stage 1 Power Kits are designed to work with most DRI engine kits.
To purchase the Stage 1 Kit click here
S-1 Bolt-On Kit

 

·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 Graphics & Seat Cover Kit

·PERFORMANCE GAIN: 6 HP+

·INSTALLATION: 3-5 Hours

*Choice of Graphic and Seat cover color where applicable.

'06-'09 S-2 Bolt-On Kit

 

To purchase the Stage 2 Kit click here  
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·INCLUDES: Fat Boy 4 Complete Exhaust System, 470cc Big Bore Piston Kit Big Bore Headgasket, Cylinder Strip-Bore-Replate to fit 470cc, HP 4 Kit (DR Porting, SERDI Valve seat Cut Big Valve Kit, HD Valve Springs, Shortened Bronze Guides, Hardfaced Camshaft), Instructions, DR Tech Support.

·PERFORMANCE GAIN: 15+ HP over Stock depending on Cam compression option.

·COMPRESSION OPTIONS: Compression: (’04-’05) 11-1, 12-1
 Compression: (’06-’09) 11-1, 12.5-1

                                                 
·CAMSHAFT OPTIONS: BILLET Made in USA-(no core required) Camshaft-Low End/Baja-XC X22, , Camshaft-Mid/Top End-MX X11, Camshaft-Full Top End/Drag Race X33 (to see options below click here)

·FUEL: 11-1 93 Octane Pump Fuel, 12-1 and up 105-112 Race Fuel Octane

·AIR/FUEL:
(’04-’05) Rejet stock carburetor. For maximum power install 40mm FCR and upgrade to ’09 TRX 450 Air Box Assy
(’06-’09) Rejet stock FCR Carb

·AIR CLEANER: Recommend Pro Flow K&N Kit in stock airbox with no lid.

·CORES REQUIRED:
Cylinder, Head

·NEW CORE PRICING:
(’04-’05) Head $367.00 , Stk Cylinder $298.00
                                        (’06-’09) Head $339.00 , Stk Cylinder $276.00

·UPGRADE OPTIONS:    
+2mm Intake S/S Big Valve Kit #DR-30220 $230.00

Call for oversized Titanium Valve options

Vortex Ignition (’04-‘05) #VT-1450 $499.00
Vortex Ignition (’06-‘09) #VT-1456 $499.00
FCR Carburetor 40mm #K-FCR-40-HT $699.00
’09 Air Box Assembly #DR-17210 $115.00
K&N Pro Flow Kit #PD-227 ('04-'05) $139.95
K&N Pro Flow Kit #PD-246 ('06-'09) $149.95

·DELIVERY TIME: 3-4 weeks


National Kit
 
 
 
 
 
 
 
 
·NOTES: Kit Price is plus any OEM parts.
Customer must send in to DRI their; Cylinder, Head, Camshaft for modification. (or purchase new cores)

478cc ENGINE KIT

call for details
*offers enhanced torque
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·All Fat Boy 4 Exhaust Systems with FREE jet kit included with instruction packet
·Made in USA · Professionally Designed and Developed to offer Maximum Performance · Stainless Steel Header and Tail pipes · CNC Stainless Steel Header Flanges · CNC Machined Front and Rear End Caps · Stainless Steel Muffler Core-Rebuildable · Repackable-Limited Lifetime Warranty

FAT BOY 4 Complete Stainless Exhaust System
(with Standard Muffler)

#FB4-EH4500 ('04-'05) $599.00  
#FB4-EH4560 ('06-'09) $599.00  
     
To purchase the '04-'05 Fat Boy 4 System click here
Fat Boy 4 Exhaust System
To purchase the '06-'09 Fat Boy 4 System click here

Fat Boy 4

 

 
 
 
 
 
FAT BOY 4 HQ Complete Stainless Exhaust System
(with HQ Muffler)  
#FB4-EH4500-HQ ('04-'05) $649.00  
#FB4-EH4600-HQ ('06-'09) $649.00  
Features: 30% larger volume, redesigned packing and core. Reduces sound output by 3-4 db.
Fat Boy 4 w/turndown
 
To purchase the '04-'05 Fat Boy 4 HQ System click here
To purchase the '06-'09 Fat Boy 4 HQ System click here
 
 
   
Optional Accessories     
#FB4-4A250 $39.95 Turndown (bolts on with o-ring) 
#06-554  $17.95 Spark Arrestor
(requires turndown) 

1.Turndown bolts on rear end cap, with o-ring seal.
2.To use spark arrestor turn down is required.
*Rejetting is required, with installation of all Fat Boy 4 exhausts.

QP-2 Quiet Tip ** Available in silver only
#FB4-QP-2 $129.95  

·Bolts on rear end cap of Fat Boy · Lowers DB readings a minimum of 2-3 dbs · Forestry approved when used with screen.

* Note: Some rejetting may be required.

     
To purchase the QP-2 Quiet Tip click here
     
Fat Boy 4 with QP-2
To purchase Fat Boy 4 Accessories click here
     
To purchase Fat Boy 4 Replacement Parts click here
     
     
     
QP 2 with screen
Custom Colored FAT BOY 4 Mufflers * at additional cost

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.



**Custom Color prices are in addition to the regular Fat Boy 4 price Example:
TRX450 Fat Boy 4 Complete Exhaust System-
    $599.00

             Custom Colored Muffler and Endcap   +    $114.90

                Total cost with color option             =     $713.90

Purchase Options : Additional cost of anodizing
#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 Blue
Custom Colored End Caps
Custom Colored Mufflers
Custom Colored Turndown



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JE Forged Piston Kits $225.00

 

 

'04-'05  
#261546 STD 12.5.1 2-ring  
#261547

STD

13.5-1 2-ring
'06-'09      
#274189 STD 12.8-1 3-ring
#274190 STD 13.5-1 3-ring
#262287 STD 12.8-1 2-ring
#262284 STD 13.5-1 2-ring  
JE Piston
           
See chart in JE Piston section for part numbers  
     
FCR Carburetor 40mm  
#K-FCR-40-HT $699.00  
* Throttle and cable additional cost
** Use above carburetor with stock '04-'05 airbox
#K-FCR40-HT6 $599.00  
* Use on '04-'05 model with '09 TRX450 airbox assembly
 
40 MM FCR
   
FCR Accessories  
#05-0315       Cable Thumb to 40mm FCR  $13.50  
#K-53140       Honda Twist Throttle and dual cable system    $124.50
#01-54472      Vortex ¼ Turn Twist throttle and cable $64.50
#K-JRF4           Jet Kit (2-pilots, 4-mains)    $35.00
#K-                       FCR Needles Call
# WK-31260 Hot Start Lever    $69.95
#HS-17920  Hot Start Cable  $19.95
                            
Hot Start Lever
    

 

New Crankshaft with Knife Rod
#CRK-1453N 04-'05 $695.00
#CRK-1461N '06-'09 $695.00
   
   
TRX450R Crankshaft
Knife Forged Connecting Rods  

(04-'05)  

#F-TKRH4 $210.00  
('06-'09) #F-TKRH46  $210.00
Features an aerodynamic oval beam design that resists twisting and reduces turbulence. Knife rods are specifically designed to withstand the demands of high RPM, performance modified, press-together cranks.
*$100.00 Labor charge to install.
Knife Connecting Rod
**New pin and bearings required at additional cost.  
*** Please specify year.  
Vortex Ignition  
#VT-1450  ('04-'05 $499.95
#VT-1456  ('06-'09) $499.95
·Instant Plug-In Performance · 10 Selectable Power Curves · V Boost Booster for Maximum Spark Energy ·Programmable Rev Limit-Race Proven performance and Reliability · 12 Month Warranty from DOM.
    Vortex CDI
NOTE: Ignition curve advance limited because of stock flywheel pick up location. Only allows limited ignition curve modification. Moderate power gain in low to mid range.
To purchase the Vortex click here  
Chain Guards
#DR-1SCG ('04-'05) $29.95 Silver, Red & Black
#DR-16CG ('06-'09) $29.95 Silver, Red, Black & Blue
 
   
 

To purchase the '04-'05 Chain Guard click here
To purchase the '06-'09 Chain Guard click here
 
Chain Guards Installed
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Includes: Forged Big Bore Piston Kit and Big Bore Headgasket


*Cylinders must be modified to accept big bore pistons, customer can send in their cylinder for modification at additional cost $295.00 or purchase new core from DRI (see below for more info)
BIG BORE (’04-’05)    
12-1 Compression   470cc   $275.00  
12-1 Compression   478cc $275.00  
     

BIG BORE (’06 -’09)

     
12.5-1 Compression    470cc $275.00    
12.5-1 Compression    478cc   $275.00    
DRI strongly recommends 470cc big bore kits for most applications. The 470cc kits offer the best balance of performance, reliability and value.
Note: Call for details regarding larger displacement big bore kit options.
 
Purchase Examples
     
'04-'05
'06-'09
 
Customer sends in own Core:

$0.00

Customer does not send in Core - New Core price:

$298.00 $276.00

 

Strip Bore & Replate

$295.00 Strip Bore & Replate

$295.00

$295.00

 

Piston

$225.00

Piston

$225.00

$225.00

 

Headgasket

$49.95

Headgasket

$49.95 $49.95

 

Total:

$569.95

Total:

$867.95

$845.95  
           

 

       

 

Replacement Head Gasket    


#BB-12251-96 (04-05) 470ccHeadgasket $49.95
#BB-12251-97 (04-05) 478cc Headgasket $49.95
#BB-12256-98 (06-09) 470cc Headgasket $49.95
#BB-12256-99 (06-09)
478cc Headgasket $49.95
     
Replacement Head Gasket-Big Bore
     
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DRI HP4 Valve Train Kits
· In House Cylinder Porting & Valve Seat Machining · Flow Bench Tested-Big Valves ·Heavy Duty Valve Springs ·Shortened Guides ·High Performance Camshafts
HP4 Kit with DRI Porting & SERDI Valve Seat Machining
#DR-108KP $1395.00
·INCLUDES: DR Porting, SERDI Valve Seat cut, Hardfaced camshaft (see options below), HD Valve springs, 4 shortened guides, 4-piece Big valve kit (+1mm IN, EX) * Head will be reassembled by DRI
*Notes: 1, 4, 5
·PERFORMANCE GAIN: up to 5 HP* DRI HP4 Kit with Porting
*Results vary depending on camshaft profile and piston compression.  
   
HP4 Kit without DRI Porting  
#DR-108K  $950.00  
·INCLUDES: Hardfaced camshaft (see options below), HD Valve springs, 4 shortened guides, 4-piece Big valve kit (+1mm IN, EX)
* This kit does not include DR porting and SERDI Valve seat cut
**Kit must be installed by a trained professional

*Notes: 1, 4, 5
 
DRI HP4 Kit w/o Porting
·CORES REQUIRED: Head
·NEW CORE PRICING: Head
·INSTALLATION: Kit must be installed by a trained professional
·DELIVERY TIME: 2-4 weeks
X11 Grind Camshaft X22 Grind Camshaft X33 Grind Camshaft
Part #:108-X11 Part #:108-X22 Part #: 108-X33
Specifications: Midrange/Top End Cam, Lift: .430"/.385", Duration 266°/282°
Specifications: Bottom/Midrange Cam, Lift: .412/.350", Duration 260°/268°
Specifications: Maximum Top End Cam, Lift .435/.385" Duration 276°
Application:Motocross/Sand Dune Riding Application: Baja/Cross Country
Application: TT/Drag Race Cam
Notes: 1, 2, 3 Notes: 1 Notes:: 1, 2, 3
·NOTES:
1.HD Valve Springs are required for this camshaft.
2.Shortened Bronze Guides are required for this camshaft.
3.New or modified piston required for this camshaft. Additional valve pocket relief in piston is required due to increased camshaft lift.
4. '08 TRX450 electric start model uses different mechanism.
Use part #140-grind #. All grinds are available in #140 -X11,X22, X33
 
Camshafts

Camshafts sold separately · Hard Faced Billit Made in the USA
Grind options and application notes listed above
X11 #108-X11 $425.00
X22 #108-X22 $425.00
X33 #108-X33 $425.00
  Camshaft
Big Valve Kit


Big Valve Kit

 

* Must Specify Year '04-'05 or '06-'09
 
   
Valve Spring Kits    



HD Springs with titanium retainers. Required with all DRI camshafts
HD Spring Kit with Titanium Retainers (04-05) #VS-K720 $229.00
HD Spring Kit with Titanium Retainers (06-09) #VS-K640 $229.00
 
 
  HD Valve Springs
Shortened Bronze Guides  
IN '04-'05 #VG-3730 $19.95 ea.  
EX '04-'05 #VG-3740 $19.95 ea.  
EX '06-'09 #VG-3210 $19.95 ea.  
  Shortened Bronze Guides
 


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DR Clutch Kit
#DR-C145 $199.00

(fibers,steels,springs)  


To purchase the DR Clutch Kit click here
DR Clutch Kit
HINSON Billet Clutch Basket



#H224 $249.99
· CNC Machined from T-6 7075 Billet aluminum
· All Hinson clutch components are treated with a Unique Akadize process, Lovett, for maximum durability.
· Hinson Clutch Baskets are stronger; wear longer, lighter and machined to enhance the oiling of the clutch
To purchase the Hinson Clutch Basket click here
Billet Clutch Basket
   
HINSON "Works Kit" (Inner Hub & Pressure Plate)
#H223 $474.00
Better contact points, uses the same fibers & steels.
 
Hinson "Works Kit"
Quick Change Clutch Cover (Black, Blue & Red)
#QC-145N
$200.00
   
    Clutch Cover Installed
To purchase the Quick Change Clutch Cover click here  
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K & N Filter    
#HA-4505 ('04-'05) $79.95
#20-1077 $19.95
Outerwear  
To Purchase the K&N Filter Kit click here
     
Pro Flow Kit   (flange w/Uni w/wrap)
#PD-226 ('04-'05) $99.95
#PD-245 ('06-'09) $109.95
#PD-226A ('04-'05)
(Uni replacement Filter)
$45.00
#PD-245A ('06-'09)
(Uni replacement Filter)
$45.00
Pro Flow Uni Kit
     
K&N Pro Flow Kit (flange with K&N w/ outerwear)
#PD-227 ('04-'05) $139.95
#PD-246 ('06-'09) $149.95
   
K&N Replacement Filters for Pro Flow
K&N Filter & Outerwear
#PD-227A ('04-'05) $69.95
#PD-246A ('06-'09) $69.95
   
(Outerwear)  
#PD-227C ('04-'05) $24.95
#PD-246C  ('06-'09) $24.95


To Purchase the 04-05 Pro Flow Kit click here
To Purchase the06-09 Pro Flow Kit click here

K&N Pro Flow Kit- Installed
 
 
Complete Engine Rebuilding 
(Tear down & Reassembly)
#ER-4445    $650.00
Head Port and SERDI Cut #PO-4VLV-VJ $495.00
(includes R & R guide)      
Valve Job  #MS-8004 $200.00
     
     
Complete Engine Disassembled
 
*ALL ENGINE SERVICE PRICES PLUS PARTS.  
     
Balancing/Lightening  
Crankshaft Lightening Only #MS-LIGHT $249.00  
Crankshaft Balancing ( plus metal) #MS-BAL $250.00  
*Customer must supply stock crankshaft-Crankshaft must be in good condition  
* Customer must supply gram weight of -piston assembly or piston assembly  
New Crankshaft Lightened and Balanced Call for Pricing
* New Crank Supplied- No core required  
 
 
LOBO II FRONT SUSPENSION KITS  


#RD-LB215F $2995.00
·Made in USA-4130 Chromally Oversized Gullwing Lower A-Arms · Maximum Wheel Travel-Enhanced Steering · Linear Motion Ratios Improves: Braking, Weight Transfer and Corner Stability · Encapsulated Upper Ball Joints · Desert-Motocross-Multiple Shock Options:Elka-Fox-Axis · All Kits Include Crown Steel Braided Front Brake Line Kit
LOBO II F. Suspension Kit

Includes: Lobo A-Arms, Axis or ELKA shocks, Tie Rods, CROWN Brake Lines, Upper & Lower A-Arms come powder coated.
For chrome Plates upper arms add $250.00
LOBO II-Wheel Off
For custom powder coat colors in additional charge may apply  
DR Chrome Front Bumper

#DR-1450 $179.00

· Made in USA-Mild Steel-Heli-Arc Welded · Triple Plate Chrome · Fit Pre-checked on All Bumper·

* Text Black Front Bumper available by special order only
Please call for details

To purchase the DRI Chrome Front Bumper click here DR Chrome Front Bumper
   
Roll Design SWINGARM       

 

* Special order ONLY- Call for details
#DR-SW15  
Chain slider add $90.00
     
Anti-Vibe Handlebar Mount Kit
Roll STD (7/8)      
#4766 $89.95  
Roll Oversized (1 1/8)  
#4734 $89.95  
     
“CROWN” Series Brake Lines (Std. or +2)      
Front Std. #CR-5600  $109.50
Front +2 #CR-5625  $109.50 
Rear #CR-5650        $39.95
Available in: red, blue, yellow, smoke, clear       
 
To purchase the CROWN Series Brake Lines click here
 
Front Brake Line
ROLL ATV Foot Pegs 
'04-'05 #302206-K $199.00
'06-'09

302207-K

$199.00
* Available in Textured Black Only
To purchase the Roll Foot Pegs click here
 
 
Foot Peg - Kick Up
Skidplates 

*Call for more details
Swingarm $104.95
Engine (Gylde) $124.95
   
   
     
TEAM FIRESTICKS AXLES +3

#TM-0201-2001   $449.00
*Uses stock OEM hubs (not included)
**TEAM has discontinued axles that use their rear wheel hub.
Replacement 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.
 
Millennium Rear Bearing Carrier (taper bearings)    
#TM-0201-3003 $299.00
 
Twin Row Rear Bearing Carrier    $249.00
 
Anti-Fade Axle Lock Nut  
#TM-0201-4002 $249.00    
       
       
 
Elka
ELKA Front Shocks (for stock a-arms or other brand)
Call for details and pricing
   
See chart in Suspension product section for part numbers
 
 
ELKA Rear Shock  
Dual Rate    
from $879.00  
ELKA Rear Shock Linkage      
#EL-45LK    ' 04-'05  $225.00
Dual Linkage   
#LK-0414                       $395.95  
     
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
STD GPR Low Boy
GPR Standard Low Boy Dampners Color Choices
#GPR-1450-LB $450.00
To Purchase the GPR STD Low Boy Remote click here
   
GPR Low Boy Remote
#GPR-1450-LBR $495.00
    GPR Low Boy Remoter
   
   
To Purchase the GPR Low Boy Remote click here
 
  Low Boy Remote Handlebar Dial
Motion Pro  

Vortex Cable $29.90
CR Throttle Cable $29.90
See chart in Motion Pro product section for part numbers
  Motion Pro Throttle Cables
Billet Shifter    

#DR-15AS 
(STD Length) 
$89.95
   
   
Billet Shifter
IMS 4.3 Gal. Tank (blue, red, natural, black, yellow)      

#12-2229 $274.00
   
     
Shockwears 

Duncan Racing Shockwears
#SW-501 $39.95 set

·Made for DRI by the Outerwears Co.
·Manufactured from durable, water repellant denier nylon
·Easy Installation
*Call for availability & colors

Duncan Racing Shockwears




 
Duncan Racing Elka Shockwears
$45.00 Set  

·Manufactured from durable, water repellant denier nylon
·Equipped with Bones, plastic inserts to help keep the material from getting pinched in the springs
·Designed to protect shocks from, mud, dirt and sand Vented for cooling air ·Duncan Racing & Elka Suspension Logos
·Easy Installation
*Call for availability & colors
*NOTE: Shockwears come in a front pair only and are designed for use with long travel shocks.

*Call for availability & colors
    Duncan/Elka Shockwears
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DRI/ONE Graphic-Seat Cover Kit
Red #DR-DUN45GS6-RD      $129.95
 
     
     
DR Graphics & Seat Cover Kit RED
Black #DR-DUN45GS6-BK $129.95
     
     
     
DR Graphics & Seat Cover Kit BLACK
WHITE/Red #DR-DUN45GS6-WR      $129.95
     
 
 
DR Graphics & Seat Cover Kit WHITE/Red
WHITE/Black #DR-DUN45GS6-WB      $129.95
 
 
To purchase the DRI Graphic & Seat Cover Kit click here
DR Graphics & Seat Cover Kit WHITE/Blue
   
   
"4-Stroke" Decal Kits (call for colors and availability)

#DR-874  $19.95
DRI 4-Stroke Decal Kits are 11 in. x 17 in. filled with different sizes of multiple DRI brand logos including; Fat Boy 4, Duncan Racing, DR Icon and duncanracing.com.

Made from high quality 15 mil adhesive, built to last.
To purchase the Decal 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 DRI 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 Red Black
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