Overview
The MYLAPS RC4 Pro Direct Powered Personal Transponder in pitch-black is the world's smallest RC racing transponder, engineered for serious competitors who demand pinpoint lap-timing accuracy without adding weight or clutter to the chassis. At only 3 grams with a clean 8 cm cable, the RC4 Pro is 25% smaller than the original RC4 and installs effortlessly into virtually any 1/8, 1/10, or 1/12 scale RC car or truck.
Drawing power directly from your receiver, this maintenance-free transponder eliminates batteries entirely and integrates with the MYLAPS Speedhive platform so you can analyze lap times, compare practice runs, and share results across club, regional, and national MYLAPS RC4-equipped tracks.
Key Features
- World's smallest RC transponder — 25% smaller than the original RC4
- Ultra-lightweight 3 g design in stealth black housing
- Short 8 cm (3.15 in) cable for clean, clutter-free installation
- Direct-powered from receiver — no battery to charge or replace
- Aerospace-grade PTFE wire insulation (gasoline/nitro resistant)
- Compatible with all MYLAPS RC4 timing systems and firmware versions
- Full MYLAPS Speedhive app and web integration
Performance Benefits
- Reduces unsprung and rotating mass for sharper handling and faster lap times
- Shorter cable improves wire routing and lowers chance of interference
- Reliable signal pickup at start/finish and intermediate split points
- Shock-proof and mud-proof for indoor carpet, outdoor clay, and dirt tracks
- Speedhive analytics help you identify trends and improve consistency
Usage Notes
Best Used With RC Scales: 1/8, 1/10, and 1/12 scale electric and nitro RC cars, trucks, buggies, truggies, on-road touring cars, short course trucks, rock crawlers, and even RC model boats.
- Mount transponder holder at a maximum height of 15 cm (6 in) above the ground
- Connect to a free receiver channel (typically CH3 or CH4) via standard servo plug
- Compatible exclusively with MYLAPS RC4 timing systems
- Race results auto-upload through track systems; practice data viewable in personal Speedhive account
Technical Specs
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Dimensions (W×L×H): 15.7 × 18.0 × 4.5 mm (0.62 × 0.71 × 0.18 in)
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Weight: 3 g
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Cable Length: 80 mm / 3.1 in
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Max Speed: 120 km/h (75 mph)
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Operating Temperature: 0–50 °C (32–122 °F)
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Humidity: Up to 90% relative
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Signal Transfer: Magnetic induction
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Code Resolution: 1.5 ms
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Operating Voltage: 2.8–16 V DC (recommended 3.5–12 V DC)
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Power Consumption: 19 mA @ 6 V DC
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Connection: Standard servo plug (free receiver channel)
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Wire Insulation: Aerospace/MIL-spec high-temp PTFE (gas/nitro resistant)
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Compatibility: MYLAPS RC4 timing systems (all firmware versions)
Fitment
This transponder fits virtually all RC vehicle scales and platforms running on MYLAPS RC4-equipped tracks:
- 1/8 scale electric and nitro buggies, truggies, and on-road
- 1/10 scale touring cars, buggies, short course trucks, stadium trucks
- 1/12 scale on-road pan cars
- Rock crawlers and scale trail trucks
- RC model boats
- Any RC vehicle with a standard receiver channel and MYLAPS RC4 track compatibility
What's Included
- (1) MYLAPS RC4 Pro Direct Powered Personal Transponder – Black
- (1) Double-sided mounting tape
- (1) MYLAPS sticker sheet
- (1) Quick Start Guide
Summary
The MYLAPS RC4 Pro Black Transponder is the gold-standard timing solution for competitive RC racers who demand the lightest, smallest, and most reliable personal transponder on the market. With direct power, MYLAPS Speedhive integration, and proven RC4 compatibility, it's the must-have upgrade for any racer chasing podiums on club, regional, or national MYLAPS-timed tracks.
