VehiclesBoom Racing BRX01 AWB Holy Grail Custom Builders Kit

Boom Racing BRX01 AWB Holy Grail Custom Builders Kit

Name: Boom Racing BRX01 AWB Holy Grail Custom Builders Kit
Brand: Boom Racing
SKU: BR8016

1/10 scale · crawler · BR8016

Specs

Gearing Top speed

sourced

Sold without a motor, so there is no stock KV: compare gearing by rollout.

Boom Racing BRX01 AWB Holy Grail Custom Builders Kit — Photo: Boom Racing (opens in a new tab)

Background

The BRX01 AWB Holy Grail is a configurable builder package based on the BRX01 AWB leaf and linked chassis kits. The ordering process allows the builder to select suspension and drivetrain equipment rather than requiring a single fixed specification. It therefore belongs beside the leaf and linked builder entries as a custom configuration, rather than receiving their numerical gearing automatically. Motor and ESC choices are optional selections during configuration. ¹

Specifications

Last modified Oct 7, 2026

14 specifications across 5 groups, covering stock setup, dimensions and components.

Spec	Value	Basis
Vehicle
Class The kind of vehicle the maker sells it as. It sets what the car is built to do and which cars it is fair to compare it with. Crawlers are built for slow, controlled climbing over rocks: very low gearing, flexible suspension and locked axles. Drive All four wheels are driven. That gives more grip under power, especially on loose ground. The cost is more parts to maintain. A crawler needs every wheel pulling to climb. Power Sold without a motor, so you choose the motor, ESC and battery yourself. Rows that depend on the motor say so. Build A kit you build yourself from parts. Most kits come without motor, ESC, servo, radio and battery, and many without tires or a painted body. The manual lists what to add. Scale The maker's nominal size compared with a full-size vehicle. It works more as a class label than a measurement. A 1/10 monster truck is far bigger than a 1/10 touring car, so compare length and weight for real size. Part number The maker's product number for this exact version. A V2, a new color, or a kit instead of an RTR usually has a different number, and parts can differ between them. Check it against your box or receipt before ordering parts.
Class	Crawler
Drive	4WD
Power	Motor not included
Build	Kit
Scale	1/10
Part number	BR8016
Drivetrain
Pinion The small gear on the motor shaft. Fewer teeth gear the car shorter: quicker acceleration, lower top speed and a cooler motor. More teeth do the opposite. It depends on the motor you fit, so the maker does not list one. Spur The large gear the pinion drives. A bigger spur with the same pinion gears the car shorter. Pinion and spur must have the same pitch, or tooth size, to mesh. Transmission & axle Every reduction after the spur, multiplied together: transmission, transfer case and axle gears. That chain is why a crawler's figure is much higher than other classes'. It is fixed by the design; the gearing you change is the pinion and spur. Final drive How many times the motor turns for one turn of the wheels. A higher number is shorter gearing: more acceleration and pulling power, less top speed. Crawlers run far higher ratios than other classes, so the truck can creep and hold on a climb.
Pinion	Not published
Spur	Not published
Transmission & axle	Not published
Final drive	Not published
Wheels & tires
Tire diameter The outside diameter of the mounted tire, tread to tread. A taller tire covers more ground each turn, which gears the car taller. Crawler wheels are named by rim size, such as 1.9 or 2.2 inches; that is the wheel, not this tire diameter.
Tire diameter	Not published
Power
Motor Motor KV is the RPM a motor turns per volt with no load. This vehicle comes without a motor, so there is no stock KV; it depends on the one you fit. Battery The highest LiPo cell count the maker rates the electronics for. This vehicle comes without electronics, so it depends on the ESC and motor you fit.
Motor	Not applicable
Battery	Not applicable
Performance
Theoretical top speed It needs a motor KV, and this vehicle comes without a motor. Fit one and the calculator works it out from the motor's KV and the gearing.
Theoretical top speed	Not applicable

How to read these figures

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.
Not published means it exists but no source we could find prints it.

About these specs

Custom configuration: stock tooth counts, total reductions and tire outside diameter vary with selected equipment and remain unknown. No fixed drivetrain is inferred from the related builder kits.

Sources

1 source link for this model.

Individual part and electronics specifications.

Parts and electronics

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Boom Racing BRX01 AWB Holy Grail Custom Builders Kit

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