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RRP RX4 Complete Build Package (Yokomo MX4 Prototype) RRP-01RX4.

The Yokomo MX4 Prototype chassis has been reborn! Meticulously built at RRP headquarters with the utmost detail and using nothing but top quality materials. No 3D printed components used anywhere. This is a complete replica build to match the specifications of Masami Hirosaka's 97 worlds winning 4WD Yokomo MX4.


  • RX4 Assembly Service.
  • Engraved and Serialized RRP-RX4 Chassis.
  • RRP Lightweight Motor Mount (RRP-004XG).
  • Complete Outdrive Set For xGen RX4 Evo (RRP-008XG).
  • Black RRP CVDs (RRP-005MX).
  • Titanium Hinge Pin Set for RX4 Evo (RRP-001RX).
  • Titanium phillip screws.
  • Standard Ball Bearings.
  • Front Alloy Bulkhead.
  • Rear Delrin 3-Piece Bulkhead in White.
  • Kydex Front Bumper.
  • JCR stock Yokomo MX4 wheels (white).
  • Offroad tires (customer preference).
  • Clear MX4 Shell and Wing (RRP-001MXB & RRP-001MXW - Not trimmed).
  • RX4 Clear Undertray (RRP-001RXU - Not Trimmed).
  • RRP-RX4 Decals.


  • Lipo Battery Tray For xGen RX4 Evo in Carbon Fiber (RRP-001XG): $35
  • Alloy C-Hub Set For xGen RX4 Evo (RRP-012XG): $40
  • Alloy Front Hub Set For xGen RX4 Evo (RRP-005XG): $45
  • Alloy Rear Hub Set For xGen RX4 Evo (RRP-002XG): $45
  • xGen "X" Shaped Belt Tensioner & Standoff (RRP-006XG): $45
  • Belt Tensioner Standoff Posts (2) For xGen RX4 Evo (RRP-007XG): $60
  • RRP Gold CVDs (RRP-006MX): $80
  • xGen RX4 Evo Slipper Assembly with 81T Spur Gear (RRP-003XG): $100
  • Complete GR5 Titanium Hardware Kit (Hex Screws - 100+ pcs): $100
  • 12mm or 13mm Big Bore Shocks (customer preference): $120
  • Custom Anodizing Service: $140
  • Painted Shell & Wing With Trimming Service: $150

**Replica Notes: Customers can request a Masami Hirosaka 1997 MX4 prototype replica build under the "Special Requests or Comments" when selecting the "Painted Shell and Trimming Service" at checkout. The MX4 worlds replica picture in this ad is shown for reference purposes only.

**Deposit Disclaimers: Customization charges will be added to the $500 deposit.

**General Considerations: Orders are fulfilled in a first-come first-served basis. Any build customizations are honored and handled with each buyer separately. Please contact us with specific requests and questions. Customers can coordinate with RRP and provide a donor (stock) MX4 buggy, for a discount towards the total build price.

RRP RX4 Complete Build Package RRP-01RX4

Out of Stock

    Customization selections at checkout will be added to the $500 deposit.

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