RC racing equipment, part by part and rule by rule.

This section is a reference to RC racing equipment as the published rules describe it. It names the parts and says what each body requires of them. It does not cover building, assembly, setup, tuning, soldering, wiring, engine break-in, fuel mixing or handling, or charging, balancing, storing or disposing of batteries: those belong with the makers' instructions, a club and the track's own rules. No page here says a car, battery, charger, engine, fuel or transmitter is legal, compliant, approved, certified or safe. Each page says instead which body's list or which authority's rule decides.

Makers' figures are given as the maker's claims and were not tested for this site. Racing rules are sport rules, never law, and the law is always given country by country.

Who sets the rules on equipment

The pages

The car

• Chassis and scales: IFMAR's and EFRA's size and weight limits by class, bumper and driver-aid rules, and the 460 mm against 457.2 mm disagreement.
• Tyres and bodies: control tyres, sizes, additive and warmer bans, body homologation and ROAR's 2026 off-road body list.
• Radios and receivers: 2.4 GHz and crystal sets, impound, the driver-to-pit radio disagreement, servos and transponders.

Electric power

• Motors: the 05 brushless can, Modified and Spec, and the Spec wind lists that differ between EFRA and IFMAR.
• Speed controllers: the zero-timing "blinky" mode, approved ESC lists and ROAR's firmware rule.
• Batteries: LiPo and LiFe terms, cell counts and hard cases, and the fire hazard as regulators describe it.
• Battery rules by body: EFRA 2026 and IFMAR 2023 side by side, ROAR's 2011 text, and the LiPo-sack rules as defined.

Nitro power

• Nitro engines and mufflers: IFMAR's 3.5 cc and 2.11 cc classes, homologated mufflers at 85 dB, and EFRA's muffler registration.
• Nitro fuel rules: IFMAR's 25 and 16 percent nitromethane limits and the EU law on nitromethane, with its 16 against 12 percent disagreement.

Lists, law and travel

• Approved equipment lists: every list found, body by body, and who is responsible for checking it.
• Radio equipment rules: the law on model-control transmitters, regulator by regulator.
• Travelling with batteries: IATA's 2026 limits, what IATA never names, and the unconfirmed US position.
• Recalls: RC car, battery and charger notices as the regulators state them.

Gaps to know about

• ROAR's current rule book and the BRCA's 2026 section handbooks were not found, so neither body's class limits are given; FEMCA's and Australia's AARCMCC's rule books were not found either, and FAMAR's were not looked for beyond IFMAR's references to it.
• EFRA's IC appendices (1/8 track, 1/8 off-road and 1/10 track engine and fuel rules) and its 2026 General Rules were not read. No IFMAR electric off-road rules later than November 2019, or batteries and motors document later than March 2023, were found.
• The FCC's, Ofcom's, the FAA's and PHMSA's own web pages refused access, so the points that rest on them are marked unconfirmed where they appear.
• The annex of EU Regulation 2019/1148 that sets the nitromethane threshold was not read.
• No standards-body text defining the "S" cell count, the "C" rating or Kv was read; these terms appear only as rules and trade press use them.