2021+ CR500 BOLT IN KIT Build Your Kit

 Designed only for the 2021 + Honda CRF450R chassis & 2022 CRF250R chassis and up-** does not work on older chassis or the 2021 CRF250R chassis** 

Our kit requires No welding!  You can re-install a 450 motor into this bike even after converted* 

Bolt in engine cradle kit using CR500 components (engine, carburetor, electrical, exhaust etc) 

Base Price includes ONLY: 

-Billet aluminum lower engine cradles (left & Right) 

-Billet swing-arm - engine case locating spacers (***required spacing for cradles***) 

Now choose options (to build your kit how YOU want) 

- ( ENGINE BOLT KIT ) motor mount bolts / hardware

-( HEAD STAY KIT ) Fabricated / tig welded HEAD STAY (pick your year) 

- ( FUEL PUMP FLANGE KIT ) Billet fuel tank flange (converts tank to gravity fed + honda pet cock) 

- (EXHAUST MOUNTING KIT) Billet exhaust spacer + bolt (for oem exhaust hanger)  - exhaust hanger bracket and hardware  (for mid pipe) - includes reducer spacer, rubber mounting and hardware. 

- ( PRE-WELDED RADIATOR KIT ) include Aftermarket CR Radiators (we modify them to work on this chassis) with Radiator locator brackets (designed for CR250R radiators to fit 21 chassis) + spacers, Billet hose extenders/ coolers

-( INTAKE KIT )  includes -silicone intake boot , Custom fabricated intake tube 2.5-3” and 3” to 4” silicone 90 to a 4” Air filter + outerwear  (please look at our youtube video for details)  **this eliminates the need for a restrictive box , and still has all the protection of one using the oem pcs to completely enclose it ** 

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PARTS NOT INCLUDED that you need to source:

- Billet Aluminum midpipe bracket, as shown in picture, is not included. It is an OEM Honda part. We show this for reference to showcase the hardware that we do include for that bracket. You will need to source the OEM bracket and rubbers on your own. Below are the part numbers for what is needed:

Stay, Chamber - 18355-KZ3-J40 (QTY 1)

Rubber, Muffler - 18334-KA3-830 (QTY 2)

Collar, Muffler Setting - 18336-KS6-700 (QTY 2)

- 2021 CRF450R chassis 

-CR500 engine (89-01 is easiest) 

-CR500 intake boot/reeds/carburetor 

-CR500 electrical (harness-cdi -stator etc) 

-CR500 Coolant Hoses (Radiator hoses)

-CR500 shift lever 

-CR500 controls/clutch cable/ throttle etc

-CR500 exhaust  + silencer  (you must modify silencer mid pipe to work with this chassis)  we are coming out with our own soon!  

-OEM honda fuel flange o-ring ( that bolts to our main flange)

-misc hardware -  a skilled mechanic with experience of a CR500  , 2 strokes, jetting etc..... please do research on CR500 - watch all of our 500 content  and learn about the process before emailing. 

USES 09-16 CRF450R KICK STARTER (NOT INCLUDED) 

 Petcock Information below (to be purchased separately)

Part Number: 16955-MEB-671 (Joint Assy, Fuel)

Part Number: 16997-467-000 (O-ring 11.8 x 3.55)

Part Number: 96001-06016-00 (Bolt, Flange 6x16)

recommend using 89-01 style intake boot on all CR500 builds