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RC8B4.1 Signature Series Build

RC8B4.1 Signature Series Build

Regular price $1,999.99 USD
Regular price Sale price $1,999.99 USD
Sale Sold out

For 2024, we decided to bring back the WB Signature Series builds. These builds are developed to be replica builds of what our race team uses. For the RC8B4.1, we have put together a setup that is simple to drive, yet competitive enough to get you to the podium.

Current Product photo is a custom build with extra pieces. If you are  interested in a custom build list, please email us at

Below is the list of options/products included with the build:

  • RC8B4.1e Team Kit
  • FT Chrome Shock Shafts [Fr- 3.5x35mm, Rr - 3.5x44.5mm]
  • FT One-piece Carbon Fiber Rear Wing Button
  • FT Low-friction X-rings, Differential
  • FT Low-friction X-rings, Shock
  • FT Titanium Turnbuckles, 4x50mm [Steering]
  • FT Titanium Turnbuckles, 5x44mm [Rear Camber]
  • FT RC8B4 Servo Saver Arm, Aluminum 
  • FT Wheel Hex +1mm (2) 
  • FT Aluminum Pillow Balls [1 pair, used in the upper position]
  • FT Rear Anti-Roll Bars, [2.5-2.7mm, setup requires a 2.6mm]
  • FT Aluminum Clamping Steering Servo horn, [18.5mm, 25T]
  • FT ALuminum Clamping Throttle Servo Horn, [25T]
  • Flash Point Magnetic Captured Wheel Nuts, Black
  • Ultimate Racing Hi-Downforce Wing, Black
  • Ultimate Racing MXS Ceramic Nitro Racing Engine w/ 2141 Exhaust Combo
  • Reedy RT5012A HV Digital Competition 1:8 Servo (2)
  • Reedy LiPo Pro 2400mAh 7.4v, Tx/RX Battery
  • Reedy Electronic Power Switch
  • WB Premium Build Service

Not included:

  • Wheels/tires - To add remounted wheels and tires, Check out TZO Tires
  • Receiver/Radio System 
  • Transponder 


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RC8B4.1 Team Kit

The build begins by using the base kit from Team Associated. The newly released kit comes with many of the options we used to add to the previous RC8B4 Team Kit. Including: 17mm outdrives, Universals and the correct Shock Springs.

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MXS Competition Nitro Engine and 2141 Exhaust System Combo

This is the 3 port .21 Off-Road Ultimate MXS Ceramic Competition Engine. Like its predecessor M3X, the MXS is made by the prestigious Japanese O.S. Engines brand and it's based on their square stroke Speed B21 Ty Tessmann II edition engine but has some modifications on the crankshaft as well as on the back plate to improve performance. This engine has more power and returns to idle way better.

With this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines on the market.

  • Reedy RT5012A Competition Servos

    Reedy's RT5012A HV Digital Competition 1:8 Servo is perfect for 1:8 buggy and truggy racers who seek the ultimate combination of performance and durability.

  • Reedy LiPo Pro 2400mAh 7.4v, Tx/RX Battery

    Reedy's Pro LiPo and LiFe RX/TX batteries feature high capacities and durable construction, which make them perfectly suited for use as receiver batteries in nitro-powered vehicles. They are also a long-life alternative to NiMH and alkaline batteries in a variety of transmitters.

  • Reedy Electronic Power Switch

    Reedy's Electronic Power Switch is a reliable and versatile alternative for 1:8 racers fed up with failure-prone mechanical switches. The LiPo mode option prevents over-discharging your receiver battery while on-board LEDS serve as a battery capacity indicator displaying real-time state of charge. The lightweight and compact design mounts with double-sided tape or use the included transponder mounting bracket, depending on your desired configuration.