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Traxxas Starter shaft ** CLEARANCE **
Traxxas Starter shaft ** CLEARANCE **
Traxxas Starter shaft ** CLEARANCE **
Traxxas Starter shaft ** CLEARANCE **

Traxxas Starter shaft ** CLEARANCE **

Brand: Traxxas

Part No: TRX4077

£6.48 RRP £9.25

In Stock: Usually ships same day

Collect Instore

The Kyosho Optima Mid Legendary Series – Koswork Edition (K.30622KE) revives the iconic mid-motor, belt‑drive 4WD buggy that helped shape modern racing. Updated for today’s electronics while preserving the classic look, this special Koswork Edition adds premium carbon and hardware upgrades for a sharper, more robust build.

Koswork Edition Includes

  • Koswork Carbon Side Plate
  • Koswork Carbon Suspension Holders
  • Koswork Carbon Rear Camber Link Mount
  • Koswork Carbon Rear Shock Tower
  • Koswork Carbon Front Shock Tower
  • Koswork Universal Drive Shafts
  • Koswork Turnbuckle Set HD

Recreated with a rigid 6016T6 aluminium main chassis, modern 48‑pitch gearing and an adjustable belt tensioner, the Optima Mid blends period‑correct style with contemporary performance and tunability.

Key Features

  • Reinforced Nylon rear wing mount
  • Reinforced slipper clutch
  • Gold anodised threaded oil shocks
  • FRP shock stays
  • 6061 T6 Aluminium, countersunk chassis
  • Moulded resin belt covers
  • Belt tensioner with easy adjustment
  • Full ball bearing set
  • Hex screws throughout
  • Adjustable toe-angle rear hubs
  • Updated steering belcrank with integrated servo saver
  • Strengthened suspension arms with stabilizer mounts
  • 12mm Hex drive with locking pin
  • 2.2" one-piece wheels in the original design
  • Body and decal sheet to recreate the original design

Technical Data

  • Length: 375mm
  • Width: 244mm
  • Height: 142mm
  • Wheelbase: 255mm
  • Tread (F/R): 208mm
  • Weight: approx. 1,600g (with 7.2V 4000 LiPo)
  • Tyres (F/R): Ø82 × 36mm
  • Motor: 540 class size (sold separately)
  • Gear ratio: 8.28:1
  • 48‑pitch pinion and 82T spur (optional 78T/80T compatible)

Kit Contents

  • Kit chassis
  • Tyres
  • Wheels (white)
  • Clear body
  • Wing (white)
  • Mask sheet
  • Decals
  • Hexagon wrench
  • Cross wrench
  • Shock wrench
  • Grease
  • Shock oil

Required for Operation

  • 2‑channel R/C system
  • Servo
  • 540 motor
  • ESC
  • Battery for chassis (7.4V Ni‑MH or 7.4V Li‑Po)
  • Suitable charger
  • Batteries for transmitter
Weights & Dimensions
Weight 13.61g 0.48oz
Shipping Weight 0.01kg 0.03lbs

Product Height 16.51mm 0.65in
Product Width 76.20mm 3in
Product Length 132.08mm 5.2in


      Key Info:
      • Brand: Traxxas
      • Part No: TRX4077
      • Barcode: 020334407702

      Additional Categories:

      Standard Shipping

      £3.95 to most of the UK

      Express Shipping

      £6.95 to most of the UK

      Worldwide Shipping

      Available at checkout

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