VehiclesElement RC Enduro Trailrunner

Element RC Enduro Trailrunner

1/10 scale · scale crawler · 40106

Tire: 97.79mm

Open in Top Speedsourced

Element RC Enduro Trailrunner — Photo: Element RC

Specifications

Last modified Sep 25, 2026

Spec	Value	Basis
Drivetrain
Pinion	18TStock	Stock
Spur	87TStock	Stock
Transmission & axle	Not applicable
Final drive	Not applicable
Wheels & tires
Tire diameter	97.8mmStock	Stock
Wheel hex	12 mmStock	Stock
Power
Motor	Not applicable
Motor shaft	Not published
Battery	Up to 3SLiPoStock	Stock
Stock motor	Reedy Crawler 16T 5-slot brushed motorStock	Stock
Battery connector	T-PlugStock	Stock
Performance
Theoretical top speed	Not applicable
Chassis
Wheelbase	313 mm12.3 inStock	Stock
Shock oil, front	30 wtStock	Stock
Shock oil, rear	30 wtStock	Stock
Vehicle
Part number	40106
Scale	1/10
Class	Scale crawler

Stock is as the vehicle ships. Calculated is worked from the stock figures on this page rather than stored beside them, so the two cannot drift apart. Not applicable means the vehicle does not come with it, like the motor on a roller or the tires on a race kit, or does not have one, like a KV rating on a brushed motor. Not published means it exists but no source we could find prints it.

Gearing parts

Pinion and spur parts for the Element RC Enduro Trailrunner: fitted, and optional gearing supplied in the box
Component	Teeth	Pitch	Bore	Part number
Fitted at the factory
Pinion	18T	48P	3.175 mm	1336 (opens in a new tab)Team Associated
Spur	87T	48P	Not applicable	9654 (opens in a new tab)Team Associated

Tooth counts are the ones in the specifications above. Pitch is given as metric module (Mod 1, Mod 0.8) or diametral pitch (32P, 48P). They are different standards and are not interchangeable, even where the numbers look close. Bore is the pinion’s hole, listed separately from the motor shaft. Linked part numbers go to the maker's or official distributor's page for that part.

How these numbers were settled

Element's spec table prints 'Internal Gear Ratio: varies' because the Stealth X gearbox turns the front and rear axles at different speeds, so the transmission and axle ratio and the final drive are left blank.

The manual's build steps and parts list name an 18T 48P pinion (#1336) and an 87T 48P spur (#9654), a fixed 20T-28T-52T front train with the 27T-53T rear pair fitted (5.7% front overdrive), and 30T/8T ring and pinion gears in the IFS front gearbox and the rear axle.
Worked out from those tooth counts, the total reduction is about 47.1:1 at the front and 49.8:1 at the rear; the included 26T-54T rear pair (11.83% overdrive) gives about 52.7:1 at the rear.
The manual fits General Grabber A/T X 1.55 x 3.85 in tires (#42107), and Element's part page gives the same diameter.
The 16-turn 5-slot motor is brushed, so KV does not apply.
The manual names a Reedy SC400X ESC rated for 2S-3S LiPo, while the product page and press release name the SC480X, so the ESC model is left blank; both documents put the limit at 3S.
The Fire edition (40106) and the original Trailrunner (40104) share this spec, and so does the Knightrunner (40113, blue 40115) with its own body and wheels.

Documents

ManualTrailrunner RTR manual (Associated PDF) (opens in a new tab)Pinion and spur p. 9
Parts listParts list, in the Trailrunner manual (Associated PDF) (opens in a new tab)Transmission p. 21

Sources

Every figure on this page traces to one of these. Where they disagreed, the note above says which was used and why.