4. Class Philosophies

2WD

Classic Kit Early to late 80s. The first generation. Where it all started. As it came out of the box.

Preserve the experience of racing production 2WD buggies from the formative era in faithful kit-style specification, with tighter limits on modifications, motors and performance upgrades.

Classic Kit and Golden Era cover broadly the same formative generation. Classic Kit is distinguished by tighter technical regulations, not an earlier date range. Release year is guidance only; final eligibility is determined by the register and published class specification.

Cars must be near kit stock with limited modifications and a silver can motor.

Example cars:

  • Team Associated RC10 6 Gear/Short Arm
  • Tamiya Fox
  • Tamiya Hornet
  • Kyosho Scorpion

Golden Era Early to late 80s. The first generation. Where it all started. With a few mods.

Showcase the performance potential of the classic-generation 2WD buggy while preserving its vintage character and complying with the established Golden Era technical specification.

Golden Era covers the formative competition generation rather than a rigid date range. Release year is supporting context only. Final eligibility is determined by design character, the published technical specification and register decisions.

Approved cars may also enter Open 2WD unless a model-specific decision states otherwise.

Example cars:

  • Team Associated RC10 6 Gear/Short Arm
  • Tamiya Fox
  • Tamiya Hornet
  • Kyosho Scorpion

Evolution Era Late 80s to mid-late 90s. The next generation. Where it started to get serious.

Celebrate the next major vintage 2WD development generation while keeping the class historically coherent. Eligible original cars are assigned by architecture and design generation rather than a hard calendar boundary.

Original 2WD competition buggies from the late 1980s through to the mid-late 1990s may qualify when their architecture and performance character fit the Evolution generation. Final eligibility is register-controlled.

Approved cars may also enter Open 2WD unless a model-specific decision states otherwise.

Example cars:

  • Team Associated RC10 Stealth/Long Arm
  • Tamiya Astute
  • Kyosho Ultima
  • Schumacher Cougar 2

Modern Retro Mid-late 90s to now. As long as has vintage style – no cab-forward bodies here – and the motor out the back.

Provide a home for modern rear-motor 2WD vehicles deliberately created to revive, reinterpret or continue classic buggy character, as well as later original competition cars.

Vehicles from the mid-late 90s onward qualify only with explicit retro intent. Modern Retro 2WD requires the approved rear-motor configuration and suitable traditional body character. A cab-rear body or rear-motor layout alone is insufficient. Re-releases and continuations follow represented-era treatment unless significantly modernised. Modern Retro remains separate from Open.

Example cars:

  • Team Associated RB 10 Retro Kit
  • PR Racing S1 RM
  • G-Force Genova
  • Kyosho Dune Master

Open Golden and Evolution Era cars, without restrictions.

Provide a development-focused 2WD class for eligible vintage and heritage platforms with broad modification freedom while retaining the identity of the registered vehicle.

Eligibility is governed by the approved vehicle register and Open technical rules, not by release year alone. Modern Retro cars do not cross-enter Open unless specifically approved.

4WD

Classic Kit Early to late 80s. The first generation. Where it all started. As it came out of the box.

Preserve the experience of racing production 4WD buggies from the formative era in faithful kit-style specification, with tighter limits on modifications, motors and performance upgrades.

Classic Kit and Golden Era cover broadly the same formative generation. Classic Kit is distinguished by tighter technical regulations, not an earlier date range. Release year is guidance only; final eligibility is determined by the register and published class specification.

Cars must be near kit stock with limited modifications and a silver can motor.

Example cars:

  • Tamiya Super SHot
  • Kyosho Optima (rear motor)
  • Schimacher CAT SWB
  • Yokomo Wonder Dog Fighter

Golden Era Early to late 80s. The first generation. Where it all started. With a few mods.

Showcase the performance potential of the classic-generation 4WD buggy while preserving its vintage character and complying with the established Golden Era technical specification.

Golden Era covers the formative competition generation rather than a rigid date range. Release year is supporting context only. Final eligibility is determined by design character, the published technical specification and register decisions.

Example cars:

  • Tamiya Super SHot
  • Kyosho Optima (rear motor)
  • Schimacher CAT SWB
  • Yokomo Wonder Dog Fighter

Evolution Era Late 80s to mid-late 90s. The next generation. Where it started to get serious.

Celebrate the next major vintage 4WD development generation while keeping the class historically coherent. Eligible original cars are assigned by architecture and design generation rather than a hard calendar boundary.

Original 4WD competition buggies from the late 1980s through to the mid-late 1990s may qualify when their architecture and performance character fit the Evolution generation. Final eligibility is register-controlled. Approved cars may also enter Open 4WD unless a model-specific decision states otherwise.

Example cars:

  • Team Associated/Yokomo YZ-10
  • Tamiya Avante
  • Kyosho Optima Mid
  • Schumacher CAT 2000

Modern Retro Mid-late 90s to now. As long as has vintage style – no cab-forward bodies here.

Provide a home for modern rear-motor 4WD vehicles deliberately created to revive, reinterpret or continue classic buggy character, as well as later original competition cars.

Vehicles from the mid-late 90s onward qualify only with explicit retro intent. Suitable traditional buggy architecture and body character are required. A retro body alone is insufficient. Re-releases and continuations follow represented-era treatment unless significantly modernised. Modern Retro remains separate from Open.

Example cars:

  • Kyosho Dirt Cross
  • G-Force Xtrada
  • Tamiya Super Avante
  • Rubrix Racing Products RX4D

Open Golden and Evolution Era cars, without restrictions.

Provide a development-focused 4WD class for eligible vintage and heritage platforms with broad modification freedom while retaining the identity of the registered vehicle.

Eligibility is governed by the approved vehicle register and Open technical rules, not by release year alone. Modern Retro cars do not cross-enter Open unless specifically approved.

For a full list of eligible models, please request access to the Grassroots Vintage Raceway Handbook.