Tamiya Mini 4WD motors guide: Tuned vs Dash, single-shaft vs PRO item numbers
Tamiya's upgrade motors split into two families (Tuned and Dash) and two shaft types (single-shaft and double-shaft PRO). Picking the wrong shaft means the motor physically cannot go into your car; picking too much motor for the track layout sends the car over the fence at the first jump.
Single-shaft vs PRO: match your chassis first
- Single-shaft motors have a pinion shaft on one end. They fit front-motor and rear-motor chassis such as FM-A on Mach Frame (18714) and Super-II on Victory Magnum (19434).
- PRO motors have a shaft sticking out of both ends. They only fit mid-motor MS and MA cars such as Blast Arrow (18635).
The Tuned line: metal brushes, longer life, calmer jumps
Tuned motors sit one step above the kit FA-130 normal motor. They use metal brushes and draw less current than Dash motors, which keeps speeds consistent over a full run.
| Motor tier | Single-shaft item | Double-shaft PRO item | Character on track |
|---|---|---|---|
| Torque-Tuned 2 | 15484 (¥462 / RM14) | 15487 (RM13.30) | Strong acceleration out of corners and up slopes |
| Atomic-Tuned 2 | 15486 (¥462 / RM14) | 15489 (RM13.30) | Balanced middle ground between torque and top speed |
| Rev-Tuned 2 | 15485 (¥462 / RM13.90) | 15488 (RM13.30) | Higher RPM for flat, flowing layouts with fewer climbs |
If you are building your first B-MAX car, start with Torque-Tuned 2 (15484 or 15487) or Atomic-Tuned 2 (15486 or 15489). You can clear jumps with less brake sponge, and the car stays predictable while you dial in your rollers and dampers.
15489GP.489 Atomic Tune 2 Motor PROPart page ›
15487GP.487 Torque-Tuned 2 Motor PROPart page ›
15486GP.486 Atomic Tune 2 MotorPart page ›
15484GP.484 Torque-Tuned 2 Motor (Mini 4WD)Part page ›
The Dash line: higher RPM and carbon/silver brushes
Dash motors step up in RPM and current draw. Above Light-Dash, they use carbon-blend brushes that wear in faster, run hotter and demand firm brake and damper setups on B-MAX tracks.
| Motor tier | Single-shaft item | Double-shaft PRO item | Notes |
|---|---|---|---|
| Light-Dash | 15455 (¥484 / RM15.30) | 15402 (RM15) | Bridge between Tuned and Hyper-Dash |
| Hyper-Dash 3 / PRO | 15477 (¥506 / RM18.60) | 15375 (RM16.90) | Standard race workhorse for B-MAX |
| Power-Dash | 15317 (¥506 / RM16.90) | — (single-shaft only) | High-torque Dash motor for technical climbs and banks |
| Sprint-Dash | 15318 (¥506 / RM18.60) | — (single-shaft only) | High-RPM single-shaft motor for long straights |
| Mach-Dash PRO | — (15131 discontinued) | 15433 (RM17) | Top-end RPM for double-shaft MS/MA cars |
Notice that single-shaft and PRO do not share the top two slots: single-shaft racers split between Power-Dash (15317) and Sprint-Dash (15318), while MS and MA racers step up from Hyper-Dash PRO (15375) to Mach-Dash PRO (15433).
15433Mach Dash Motor PROPart page ›
15375Hyper Dash Motor PROPart page ›
15318Sprint-Dash MotorPart page ›
15317Power-Dash MotorPart page ›
What B-MAX rules allow
B-MAX follows Tamiya's official race motor list: both the Tuned 2 trio and the Dash motors above are legal on their matching chassis, provided the motor can is never opened or modified. Ultra-Dash (15307) and Plasma-Dash (15186) are not legal in Tamiya official races or B-MAX.
In this post
15485GP.485 Rev-Tuned 2 MotorPart page ›
15455Light-Dash MotorPart page ›
15477Hyper Dash III MotorPart page ›
15488GP.488 Rev-Tuned 2 Motor PRO (Mini 4WD)Part page ›
15402Light-Dash Motor PROPart page ›
Mach Frame8 versionsCar page ›
Victory Magnum8 versionsCar page ›
Blast Arrow4 versionsCar page ›Unofficial, not affiliated with TAMIYA Inc. Product images are © Tamiya, shown as small previews. Removal requests: hello@mini4izad.com.