When GPtech contacted me about there new YZ450 kit I knew that many of our 2WF.com readers would be very

interested in it. GPTech is also a longtime partner with 2WF.com so here are the pictures and the press release/parts lists form GPTech on their dirtbike to trackbike project and kit.

 
GPtech llc YZ450 project (available for 06 to 08 model years)

Converting a dirtbike to a roadracer is easier and more affordable than you might think.  GPtech has designed parts for the YZ450 with simplicity and durability being the main focus.

The frame, swingarm, subframe, engine, radiators and gas tank are all left in standard trim (no welding or special parts are required to make the transition to roadracer).  It was important to GPtech to make converting a YZ450 basic and straightforward with no fabricating involved. 

A few key parts are manufactured by GPtech, making the conversion simple and straightforward.  The components needed consist of a shift arm, rearset relocation plates, a tank cover, a set of fairing brackets, and a longer steering stem (mates R6 front end to standard YZ450 headstock).

The remainder of parts are not uncommon to the average racer converting a streetbike to track use.  Additional basic parts include TZ250 bodywork, rearsets, rear shock, exhaust, clip-ons, and an oil overflow can with a refilling oil bolt. 

The converted 450  has a high corner speed comparable to a 125cc GP bike with similar power to a SV650.  The bike is designed to encourage spirited riding while teaching good motorcycle handling skills.  Weight is around 240lbs (depending on what parts are used or discarded).

Cost was another factor GPtech carefully considered.  It was important to keep the overall cost of a build down while increasing the performance of the motorcycle.  Starting with a salvaged R6 front end for $500, an average cost for a build is around $4200.  With an abundance of roadrace and motard parts on the market there are plenty of upgrade items available.  GPtech is continuing parts development with crash protection, service stands and performance parts.

GPtech testing and development info is available to all customers.  Technical support is paramount in helping customers develop the bike to best suit each rider’s needs. GPtech races what they sell - dependability, performance and versatility are keys to a successful design.

Go to GPTechllc.com for more information

Head over to our forum to tell us how badly you want one.

Yamaha YZ450

Required parts for a conversion:

FRONT SUSPENSION – (R6 OR YZ)

R6 (’05 or newer) OPTION

Steering stem **

Stem spacer **

R6 forks

R6 upper triple

R6 lower triple

R6 front wheel – Option: Galespeed Forged Alum.

R6 front caliper – Option: AP Racing

R6 front disc – Option: AP Racing

Front brake master cylinder  (16mm or larger) –  Option 1:  AP Racing
                                                                 Option 2:  Brembo
                                                                 Option 3:  Nissin

YZ450 (oem) OPTION

Front fork service – Option: Mach 1 Motorsports

REAR SUSPENSION

Ohlins rear shock

YZ450 rear wheel – Option: Galespeed Forged Alum.

CONTROLS

Shifter control arm **

Shift linkage rod assembly**

Rearset plates**

R1 rearsets – Option: Valtermoto Yam R1 04 model

Handlebar Clip-on set (50mm)

R6 rear foot master cylinder

BODY KITS

Fairing brackets** -   front, upper Y, L/R side, seat front/base/rear

Tank cover**

TZ250 bodywork– Option: Airtech (’06 or newer)

TZ250 windscreen

PERFORMANCE

Exhaust – Option: Graves

Oil catch overflow tank – Option: Graves

Oil fill plug – Option:  Graves

** GPtech manufactured parts

450 parts costs (estimated)

Suspension conversion parts (required)

---- GPtech Steering stem kit

Longer stem allows the use of OEM R6 triple clamp –

kit includes 1 stem, 1 lower tapered roller bearing (preassembled kit available – exchange program)

            parts only -                                          $265

            preassembled kit -                                 $310

---- Galespeed Wheels                                       $1890 set      

or (rear Galespeed and OEM R6 front)                   $1158 (rear only)

---- Ohlins Rear shock                            shock - $833.49
                                                                     $75 spring

----OEM R6 Front end Forks and triple set      from $580 (used)

----OEM YZ450 Front end Mach 1 modification       $500

Optional suspension parts:

---- GPtech Triple clamp set                               $820

            Billet top and lower clamp with longer stem (different offsets available)

---- AP Racing Brakes

            Radial master cylinder                     from $525

            Radial front caliper (CP7853)                   $620

            320 mm rotor                                       $420

            Rear caliper (CP4226)                            $427

            Caliper hanger (rear)                             $209

Bodywork

---- GPtech Tank cover                                     $280

            utilizes standard 450 tank, covers tank and protects radiator from damage

---- GPtech Brackets               

            front nose                                           $62

            upper T                                              $98

            left side                                              $58

            right side                                            $58

            front tail                                             $30

            rear tail                                              $130

            seat base                                           $39

---- Airtech TZ250 Fairings                         

            upper                                                 $197.77

            lower                                                 $274.27

            tail                                                    $227.85

            windscreen                                         $

Exhaust

----Graves (450 SS specific)                             TBA

----LeoVince                                                 TBA

Controls

---- GPtech Shifter linkage kit                          $98

            reverse shift pattern, reinforced shifter linkage arm

----GPtech Shifter rods                                  $28

            (different lengths available)

----GPtech Footrest plates                            $134 set

            allows the use of R1 rearsets, multi position adjustment

----Valtermoto Rearsets                         from $230 set

            Tipo 1 R1 rearset (R6 or R1 foot master cylinder required)

----GPtech Adjustable clip-ons                       $140

            adjustable bar angle, 2 piece design

----Active Gauge cluster                               $

            tach, temp, digital gauge

Optional Parts

----Active Throttle                                      $172

            reduces rotation, different tube diameters available

----Valtermoto Frame sliders                      

            left side (protects shifter)                 $

            right side (protects R master)            $

----Swingarm spool                                     $