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Products - Instructions
Spring Rates - Oil Levels 2021 Honda CRF300L

Riding Type
Age
Skill Level
Stiffness Preference
Height
Gas Tank
Lowering
Rider Weight (without gear):





  • Rider Weight (without gear):  

    • LOWERING

    Leave blank unless you are lowering the vehicle
    Flat Track is already lowered (leave blank)
  • Fork Lowered Distance*:  
  • Shock Lowered Distance*:  

Calculate Spring Rate


Calculate Spring Rates and Display Available Springs
  • FRONT INSTRUCTIONS and BASIC SETUP
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    • INSTRUCTIONS - Gold Valve Compression or Emulator Valving 
      Click Here
       
       
    • INSTRUCTIONS - Rebound Valving 
      Click Here
       
       
    • Fork Oil (USF05=5w, OSFO 10=10w, etc.) 
      USF05    2 qt/liter required
      $29.99 
       
    • Spring Side 
      RIGHT  
       
       
    • Oil Level - Standard MX (Click Here for other types of riding) 
      610 cc
       
       
    • Oil Level, No Spring Side - Standard MX  
      510 cc
       
       
    • INSTRUCTIONS - Fork Spring Installation 
      Click Here
       
       
    • Front Spring Preload - Recommended
      (stock height/not lowered) 
      4 mm
       
       


  • REAR INSTRUCTIONS and BASIC SETUP
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    • Nitrogen Pressure 
      175 psi
       
       
    • Shock Oil (less than one quart/liter required) 
      US1  
      $29.99 
       
    • Rear Spring Preload - Recommended
      (stock height/not lowered) 
      10 mm
       
       
    • Rear Sag (mm) 
      97  
       
       


  • >> FORK PRODUCTS <<
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    • Fork Brand, Diameter (mm), Type (U-upside down, C-conventional) 
      Showa 43U SFF Single Open Cartridge
       
       
    • Fork Comments 
      Measure oil volume - not level. Stock the left leg is damping only, right leg is spring only. The stock spring is way too soft. RT spring kit adds spring to the left leg and retains the stock spring in the right leg. This increases the total spring rate. RT spring calculator calculates only the new spring you are adding to damping leg. RT Fork Spring Kit includes an adapter kit to add a spring to the Damper leg. Total spring rate is a combination of both springs. No need to disassemble the right leg unless its due for a rebuild or you want to put in good oil. Custom Spring required for stiffer rates. Fork Spring Spacer 330mm long. 


  • Fork Springs
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  • Fork Valving Kits
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    • Fork Gold Valve Kit
      (Kits ending in "C" include Compression AND Rebound/Mid-Valve Gold Valves)
      (Kits NOT ending in "C" are Compression Only) 
      FMGV 2002C  
      $199.99 
       


  • WP Kit Forks/Cartridge Kit
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  • Performance/Valving Parts - Other
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  • Front Lowering
    Data
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  • Flat Track Fork Performance
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  • Holeshot Device
    Data
    Price
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  • Fork Labor (at Race Tech)
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    • Rebuild Front Suspension (labor only) 
      LDFORB2  
      $200.00 
       
    • Install Gold Valves and Rebuild Front Suspension (labor only) 
      LDFORV2  
      $200.00 
       


  • Fork Maintenance and Repair
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    • Fork Oil (USF05=5w, OSFO 10=10w, etc.) 
      USF05    2 qt/liter required
      $29.99 
       
    • Ultra Slick Inner Fork Bushings
      (use Ultra Slick Inner Bushings instead of Standard Inners if available) 
      FSBI 43US P  
      $34.99 
       
    • Inner Fork Bushings (pair) 
      FMBI 432015 P  
      $19.99 
       
    • Outer Fork Bushings (pair) 
      FMBO 43152 P  
      $21.98 
       
    • Fork Seals (pair) 
      FSOS 43 P  
      $21.98 
       
    • Dust Seals (pair) 
      FSDS 43 P  
      $34.99 
       


  • Replacement Fork Tubes by TNK
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  • Fork Tools
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  • >> REAR SHOCK PRODUCTS <<
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    • Shock Brand / Body Diameter 
      Showa   40 mm
       
       


  • Rear Shock Springs
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  • Rear Shock Valving Kits
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  • WP Kit Shock
    Data
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  • Rear Lowering
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  • Flat Track Shock Performance
    Data
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  • Rear Shock Labor (at Race Tech)
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    • Rebuild Rear Suspension (labor only) 
      LDSHRB1  
      $200.00 
       
    • Install Gold Valve and Rebuild Rear Suspension (labor only) 
      LDSHRV1  
      $200.00 
       


  • Rear G3-S Custom Shocks - Complete
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  • Pivot Works Bearing Kits
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  • Rear Shock Maintenance and Repair
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  • Rear Shock Tools
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  • >> ENGINES - LABOR ONLY <<
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    • Full Porting - Requires Valve Job
          Better power than Pocket Porting
          Recommend 5-Angle Radius Valve Job for Best Performance
          Bare Head (no valves) - does not include Rebuild
          Includes Soda Blasting and Ultrasonic Cleaning 
      L4DCH FP014  
      $410.00 
       
    • Pocket Porting - Requires Valve Job
          Great Value
          Recommend 5-Angle Radius Valve Job for Best Performance
          Bare Head (no valves) - does not include Rebuild
          Includes Soda Blasting and Ultrasonic Cleaning 
      L4DCH PP014  
      $140.00 
       
    • Valve Job - 5-Angle Radius
          5-Angle Radius for Hi-Performance (same reliability as 3-Angle)
          Bare Head (no valves) - does not include Rebuild
          Includes Soda Blasting and Ultrasonic Cleaning 
      L4DCHVJ514  
      $220.00 
       
    • Valve Job - 3-Angle
          Bare Head (no valves) - does not include Rebuild
          Includes Soda Blasting and Ultrasonic Cleaning 
      L4DCHVJ314  
      $177.50 
       
    • Rebuild Head - Labor
          For a Complete Head with Valves and Cams
          Includes Setting Valve Lash 
      L4DCHRB014  
      $100.00 
       
    • Install New Seat (each)
          Seat installation Requires a Valve Job 
      L4DCHIS011  
      $55.00 
       
    • Install New Guide (each)
          Guide installation Requires a Valve Job 
      L4DCHIG011  
      $38.50 
       
    • Crank Rebuild  
      L4DCRRBT10  
      $137.50 
       
    • Cylinder Hone (Precision Rigid Hone) 
      L4DCYHON10  
      $45.00 
       
    • Deck Cylinder  
      L4DCYDEC10  
      $72.50 
       


  • Engines - Parts
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  • Engines - Tools
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9/30/2023