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DRI BUYERS GUIDE - 300EX

Duncan Racing International, Inc - 10734 Kenney Street Suite.A Santee, California 92071 USA
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CYLINDER
 
Prices subject to change without notice

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


#BK4-3000 $539.00  

·INCLUDES: Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, K&N Filter with outerwear.

·PERFORMANCE GAIN: 3-4 HP

·INSTALLATION: 1-2 hours

Stage 1 Power Kits are designed to work with most DRI engine kits.


Stage 1 Bolt On Kit
To purchase the Stage 1 Kit click here
S-1 Bolt-On Kit
**CDI Mod Needed  
#DR-13ECDI-N
New/Modified
$224.95
#DR-13ECDI-4
Send in your CDI and have it modified
$75.00
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#EK-30NT $1395.00
300EX National Kit
·INCLUDES: Fat Boy 4 Complete Stainless Exhaust, HP4 Kit (DR Porting, SERDI Valve Seat Cut, Big Valve Kit, Camshaft, HD Valve Springs w/titanium retainers, guides), 38mm PE Carburetor Kit (thumb or twist), Jet Kit,  Piston Kit, CDI Modification,  K&N Filter, Outerwear, T-Shirt, Instructions, DR Tech Support.
**CDI Mod Not available for '06-'07models
300EX National Engine Kit

·PERFORMANCE GAIN: 30-40%

·COMPRESSION OPTIONS: 11-1

·CAMSHAFT OTIONS: X5, X25 to see options below click here)

·FUEL: Race gas 105-112 octane

·AIR/FUEL:
38mm PE

·AIR CLEANER: K&N filter w/outerwear stock air box with lid off.

·CORES REQUIRED:
Cylinder, Head, camshaft, CDI

·NEW CORE PRICING:
Head $679.00 , Stock Cylinder $368.00, Cam $129.00

UPGRADE OPTIONS:

·DELIVERY TIME: 3-4 weeks

·NOTES:
*DRI only offers hard faced cams built on stick cores.
**To insure highest quality, all camshafts used by DRI are made in the USA.
Hardfaced rockers are recommended with all camshafts.

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.If Hardfaced option is chosen, customer must send in stock camshaft core. If no core is supplied, customer must pay core charge of $129.00.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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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
Fat Boy 4 Profile
(with Standard Muffler) * Also fit Honda 250X (all years)
#FB4-EH3000 $499.00  
* No HQ mufflers available
Fat Boy 4 Exhaust System
To purchase the Fat Boy 4 System click here  
   
Optional Accessories   


Fat Boy 4 w/Turndown

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

Fat Boy 4 w/Turndown

       
QP-2 Quiet Tip ** Available in silver only  
#FB4-QP-2 $129.95  
Fat Boy 4 W/QP2

·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
QP2 w/Screen
     
To purchase Fat Boy 4 Replacement Parts click here
     
     
      QP 2 with screen
FAT BOY 4 Rebuild Kit

Fat Boy 4 Rebuild Kit A
 
Muffler "A" Rebuild Kit
$59.95

Includes: Packing, Core, Screws, O-Ring, Loctite, Decals & Instructions

Muffler "B" Rebuild Kit
$39.95
 

Includes: Packing, Screws, O-Ring, Loctite, Decals & Instructions

* NOTE: NO CORE included in Kit "B"


Fat Boy 4 Rebuild Kit B
 
To purchase a Fat Boy 4 Rebuild Kit click here
 
 
Fat Boy 4 Rebuild Kit B
       
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:
300EX Fat Boy 4 Complete Exhaust System-
   $499.00

                   Custom Colored Muffler and Endcap   +    $114.90  

               Total cost with color option             =    $613.90

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 Fat Boy 4
Custom Blue

Anodized End Cap
Custom Colored End Caps

Colors Available
Custom Colored Mufflers

Colored Turndowns
Custom Colored Turndown



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Wiseco Pistons  
Wiseco forged  11-1 Sizes: Std, 2nd, 4th, 6th, 8th    
#4574   $139.95
   
   
    Wiseco Piston
Keihin 38mm PE Carb Kit (thumb or twist)
Keihin PE Carb
Includes: Carb, manifold adaptor, twist throttle & cable or cable to work with stock thumb throttle
#K-CR38E-H   $239.00
   
Keihin PE Carb
   
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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-166KP $995.00
HP4 Valve Train Kit
·INCLUDES: DR Porting, SERDI Valve Seat cut, Hardfaced camshaft (see options below), HD Valve springs, 4 shortened guides, 2-piece Big Valve Kit , Cylinder Head Porting, SERDI Valve Seat Cut and Professional Head Assembly w/Porting.
*Customer must send in head for modification or purchase new head from DRI
*Customer must send in stock cam core or pay an additional core charge of $129.00.
·PERFORMANCE GAIN: up to 5 HP*  
*Results vary depending on camshaft profile and piston compression.  
   
HP4 Kit without DRI Porting  
#DR-166K $599.00  
·INCLUDES: DRI Valve Train HP4 Kit Camshaft (see cam profile options below), HD Valve Springs w/Titanium Retainers, Shortened Valve Guides, Big Valve Kit (+1.0mm S/S Intake Valves)
Porting Serdi Valve Seat cut not included.
* This kit does not include DR porting and SERDI Valve seat cut
**Kit must be installed by a trained professional


HP4 Valve Train Kit w/o Porting
 
·VALVE OPTIONS: +1.0mm S/S IN Valves, STD EX Valves Only
DRI HP4 Kit w/o Porting
·CORES REQUIRED: Cylinder, Head, Camshaft, CDI
 
·NEW CORE PRICING: Head $679.00 , Stock Cylinder $368.00, Cam $129.00
·INSTALLATION: Kit must be installed by a trained professional
·DELIVERY TIME: 2-4 weeks
·CAMSHAFT OPTIONS:
All camshafts are HardFaced on stock cores and retain compression release mechanism.
GRIND OPTIONS:
X5 Grind Camshaft X25 Grind Camshaft
Part #: MC-1253-05H  Part #:MC-1253-25H
Specifications: Midrange/Top End Cam, Lift: .336”/.385", Duration 249° Specifications: Maximum Top End Cam, Lift .370/.385" Duration 272°
Application: Motocross Application:TT/Drag Race Cam
Notes: 1,4 Notes: 1,2,3,4
·NOTES:
*DRI only offers hard faced cams built on stick cores.
**To insure highest quality, all camshafts used by DRI are made in the USA.
Hardfaced rockers are recommended with all camshafts.
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.If Hardfaced option is chosen, customer must send in stock camshaft core. If no core is supplied, customer must pay core charge of $129.00.
Camshafts (stock core required)
300EX Camshaft
Camshafts sold separately · Hard Faced Made in the USA
 X5 #MC-1253-05H  $179.00
X25 #MC-1253-25H $179.00
*Core Required
*Core charge $129.00 if no useable stock core is supplied
    300EX Camshaft
Valve Spring Kits    



HD Springs with titanium retainers. Required with all DRI camshafts
HD Spring Kit with Titanium Retainers #30-3041 $169.95
     
 
 
  HD Valve Springs
Shortened Bronze Guides #30-3030 $19.95 ea.
 
 
 
Shortened Bronze Guides


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DRI Clutch Kit

#DR-C13X
$119.95

 


To purchase the HD Clutch Kit click here
DRI Clutch Kit
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K&N Air Filter  

 


K&N Filter

#HA-2504 $56.95
   
Outerwear  
#Q-125-45T $24.95  
 
 
Complete Engine Rebuilding 
(Tear down & Reassembly)
#ER-4445   
$650.00

Complete Engine Disassembled
Head Port and SERDI Cut
#PO-4VLV-VJ
$595.00
(includes R & R guide)  
Cylinder Bore & Hone 
#MS-704S  
$75.00
Valve Job 
#MS-8004 
$200.00
Cylinder Sleeve 
#MS-6000 
$195.00
Complete Engine Disassembled
(Install, Bore, Surface)   
 
Flywheel Mod  
#MS-5000
$90.00
 
*ALL ENGINE SERVICE PRICES PLUS PARTS.  
 
 
DR Chrome Front Bumper


DR Chrome Front Bumper

#DR-13X0
$199.00

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

 

To purchase the DRI Chrome Front Bumper click here DR Chrome Front Bumper
* Text Black Front Bumper available by special order only.
Please call for details
 
 


Elka Shock

ELKA Front Shocks (for stock a-arms or other brand)
Call for details and pricing
 
Elka Shocks
See chart in Suspension product section for part numbers  

Nerf Bars
Aluminum Bolt-On   

Call for availability  

STD $189.95  
Pro Pegs $309.95  
    Aluminum Nerf Bar
Galfer Rotors
Laser cut-To assure perfect flatness and no stress to the material. (Most other competitor’s rotors are stamped and can warp just during that process).

Galfer Pads
1054 Semi-Metallic compound (black-Extremely versatile compound build to suit most of your costumers needs. Semi--metallic carbon based compound was made to hold abrupt temperature changes as well as to work excellent in wet or dry conditions.


Galfer Pads
   
 
DR Block Off Plates
DR Block Off Plates Silver, Blue, Red & Black
DR-PB13 $14.95
   
To Purchase the DR Block Off Plates click here:
DR Block Off Plates
 
DR Block Off Plate on Bike
IMS Fuel Tanks 3.8 Gallon  (white, blue, red or natural)        

#12-2223 $274.95
   
  IMS Fuel Tank
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"4-Stroke" Decal Kits (call for colors and availability)
4-Stroke Decals
#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 Rear Decals
"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 Red

DR Number Plates Black
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
DR Number Plates Blue

DR Number Plates White
RED #DR-840 $24.95
BLUE #DR-830 $24.95
YELLOW #DR-835 $24.95
GREEN #DR-827 $24.95
  Blue White
 
DR Number Plates Green

DR Number Plates Yellow
 
To purchase the Number Plates click here
 
  Green Yellow

 


 
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