Parts/Radio & control/Telemetry sensors/MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)
MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)
MYLAPS

MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

Part # AIT10R1474.7(54)
Where to buy
$129.99
AMain Hobbies
Seen Oct 12, 2026
$129.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

MYLAPS' RC4 Pro Direct Powered Personal Transponder is lighter and smaller than its predecessor - and now its black! The shorter 8cm/3.15" cable allows a great fit, and the complete system weighs in at only 3 grams!

MYLAPS Speedhive
Speedhive is the platform where RC racers can get more insight into their race performance. With the Speedhive app and web services you can - track races - find your practice results - compare results - share data with friends.

Timing in RC
All vehicles on the track equipped with MYLAPS transponders can be identified, and lap times tracked/recorded. Each signal is unique to the transponder, and the MYLAPS system has been the gold standard in RC racing for over a decade.

Reviews4.7 · 54 reviews

Chris SVerified owneron MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

My transponder came with tape residue on the bottom side like it had already been mounted and the packaging seemed like the item was already removed and then half assed put back in. I am semi disappointed on account of that I paid 115+ for something smaller than my pinky finger nail for it to arrive in what looks like a pre-owned condition when I could have bought a pre-owned one on eBay cheaper. I am going racing tonight so I am going to install it in my vehicle anyways. Hopefully it works because I have to trim down the plug to fit in my Sanwa RX and probably can't return it at that point. Amain typically does a good job but this kinda bummed me out.

11 found this helpful
Mario WoodsVerified owneron MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

Once again AMain hits it out of the park! When I retire I wanna work for AMain , love the service, the communication, usps shipping all excellent, Customer Service is superior to all other companies!

7 found this helpful
AnonymousVerified owneron MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

Decent for the price, you don’t have to shorten the wires and all black, wazzz up.

4 found this helpful
AnonymousVerified owneron MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

very good Transponder i have been racing since the mid 1990's and these are the best!!!!!

4 found this helpful
kyung-min kimVerified owneron MYLAPS RC4 "Pro" Direct Powered Personal Transponder (Black)

The trend-setting black is better than the red. It's easy to arrange the wiring. It's easy to maintain the shape and length.

3 found this helpful
What reviewers say

Reviewers largely agree the MYLAPS RC4 Pro transponder works reliably at the track, praising its small size, light weight, all-black finish and short lead wire for a clean installation. Several note the short wire may be too short for some receiver boxes. A recurring complaint is that some units arrived looking used, with tape residue and loose packaging, which one buyer said was resolved by a replacement. Other reviews mention a single unit that failed to register, one practice time missing from the Speedhive app, and order or delivery issues including a wrong-item return and a long-delayed shipment. Many reviewers praise the seller's customer service, though a few criticise the price relative to alternatives.

  • + Works reliably at the track
  • + Small, lightweight design
  • + All-black finish and short lead wire
  • + Clean installation
  • − Lead wire may be too short for some receivers
  • − Some units appeared used or previously mounted
  • − Occasional read or app-logging failures
  • − Order and delivery problems reported
Summary generated from the reviews above.

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