Hobbydex / RC cars / ARRMA / Infraction Grom

ARRMA Infraction Grom

Category: car
Scale: 1/12
Drive: 4WD
Power: electric

Releases

Year	Release	Item no.
2026	Infraction Grom 3S 4X4 Ready-To-Run Brushless All-Road Street Bash (Battery & Charger Included), red/black	ARA2315ST1
2026	Infraction Grom 3S 4X4 Ready-To-Run Brushless All-Road Street Bash (Battery & Charger Included), yellow/black	ARA2315ST2
2026	Limited Edition Infraction Grom 3S 4X4 Ready-To-Run Brushless All-Road Street Bash (2 x 3S Battery & Charger Included), blue/black	ARA2315ST3
2026	Infraction Grom 3S 4X4 Ready-To-Run Brushless All-Road Street Bash, blue/red	ARA2315T1

Stock gearing

2.19 : 1
59T spur / 27T pinion · module 0.5
Every release

Spur/pinion ratio of the gears in the box. The transmission's internal ratio is not in our data, so this is not the final drive ratio.

Compare the last two releases or any two releases on the compare page

Option parts listed as fitting (95)

Ball ends and links (6) · Bearings and bushings (3) · Body and covers (8) · Chassis and mounts (8) · Differential (1) · Drivetrain (10) · Electronics (2) · Gears and transmission (1) · O-rings and seals (4) · Oils and greases (3) · Pinions (15) · Pins and clips (3) · Screws (15) · Shock springs (1) · Shocks (4) · Spur gears (1) · Steering (2) · Suspension (6) · Wheels (1) · Other (1)

Ball ends and links (6)

Number	Name	Brand	Fit
ARA-1495	Shock Rod End Set	ARRMA	direct · Optional part
ARA-4776	Steering Links Set F	ARRMA	direct
ARA330803	Ball 5.3x5.9x2.5mm	ARRMA	direct
ARA330804	Ball 4.8x4.9x2.5mm	ARRMA	direct
ARA330805	Ball 5.8x7x2.5mm	ARRMA	direct
ARA340217	Aluminum Adjustable Steering Links Set B	ARRMA	direct · Optional part

Bearings and bushings (3)

Number	Name	Brand	Fit
ARA610052	Ball Bearing 8x12x3.5mm (2RS)	ARRMA	direct
ARA610053	Ball Bearing 7x11x3mm (2RS)	ARRMA	direct
ARA610057	Sealed Bearing 9x14x4.5	ARRMA	direct

Body and covers (8)

Number	Name	Brand	Fit
ARA-3582	INFRACTION Body Accessories Set A	ARRMA	direct
ARA-3583	Body Accessories Set	ARRMA	direct
ARA-3584	INFRACTION Interior Frame	ARRMA	direct
ARA-3601	INFRACTION GROM Body, Red/White	ARRMA	direct
ARA-3602	INFRACTION GROM Body, Yellow/Black	ARRMA	direct
ARA-3603	INFRACTION GROM Body, Blue/Black	ARRMA	direct
ARA-3604	INFRACTION GROM Body, Clear	ARRMA	direct · Optional part
ARA-4775	INFRACTION GROM Body, Blue/Red	ARRMA	direct

Chassis and mounts (8)

Number	Name	Brand	Fit
ARA-1418	Battery Strap Set for 200mm Chassis	ARRMA	direct · Optional part
ARA-3580	Fixed Motor Plate Set (27T/59)	ARRMA	direct
ARA-3585	Composite Chassis (227mm)	ARRMA	direct
ARA-3586	Composite Top Deck (227mm)	ARRMA	direct
ARA-3587	Sliding Motor Mount Set, Type F, Aluminum	ARRMA	direct · Optional part
ARA-3588	Clipless Body Mount Set	ARRMA	direct
ARA-3593	Smart Fit Battery Tray (100x20mm)	ARRMA	direct
ARA320753	Servo Mount/Radio Deck for Standalone ESC/Receiver	ARRMA	direct · Optional part

Differential (1)

Number	Name	Brand	Fit
ARA-3789	Assembled Center Differential 500K cSt	ARRMA	direct

Drivetrain (10)

Number	Name	Brand	Fit
ARA-2982	12mm Wheel Hex Set, Metal (4), Red	ARRMA	direct · Optional part
ARA-3116	12mm Metal Wheel Hex Set (4), Blue	ARRMA	direct · Optional part
ARA-3117	12mm Metal Wheel Hex Set (4), Purple	ARRMA	direct · Optional part
ARA-3118	12mm Metal Wheel Hex Set (4), Green	ARRMA	direct · Optional part
ARA-3119	12mm Wheel Hex Set, Metal, Gold	ARRMA	direct · Optional part
ARA-3120	12mm Wheel Hex Set, Metal, Orange	ARRMA	direct · Optional part
ARA-3276	12mm Metal Wheel Hex Set (4), Black	ARRMA	direct
ARA-3600	Center Driveshaft Steel 159mm for 227mm Chassis	ARRMA	direct
ARA-3788	Metal Axle & Wheel Hex Set Type F	ARRMA	direct
ARA311181	CVD Rebuild Set	ARRMA	direct

Electronics (2)

Number	Name	Brand	Fit
ARA-2756	25mm Fan Set	ARRMA	direct
ARA-3579	Motor Heatsink, Type F	ARRMA	direct

Gears and transmission (1)

Number	Name	Brand	Fit
ARA-2672	Input Gear Set	ARRMA	direct

O-rings and seals (4)

Number	Name	Brand	Fit
ARA-3597	dBoots Hoons 28/055 1.65 (White) 5-Spoke 12mm Hex	ARRMA	direct
ARA-3616	dBoots Hoons 28/055 1.65 Gold 5-Spoke, 12mm Hex	ARRMA	direct · Optional part
ARA-4779	Shock O-Ring Set	ARRMA	direct
ARA716039	O-Ring 5.8x2.2mm	ARRMA	direct

Oils and greases (3)

Number	Name	Brand	Fit
ARA-3294	Assembled Oil Filled Differential 30T 0.8Mod, 20k cSt Oil	ARRMA	direct
ARA-3594	Front Shock Set 38.5mm Length, 800cSt Oil	ARRMA	direct
ARA-3595	Rear Shock Set 38.50mm Length, 800cSt Oil	ARRMA	direct

Pinions (15)

Number	Name	Brand	Fit
ARA-2022	Pinion Gear 22T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2029	Pinion Gear 20T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2030	Pinion Gear 21T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2031	Pinion Gear 18T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2032	Pinion Gear 19T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2033	Pinion Gear 17T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2174	Pinion Gear 23T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2175	Pinion Gear 24T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2176	Pinion Gear 25T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2177	Pinion Gear 26T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2178	Pinion Gear 27T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct
ARA-2179	Pinion Gear 28T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2180	Pinion Gear 29T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2181	Pinion Gear 30T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part
ARA-2182	Pinion Gear 31T MOD 0.5 CNC 3.2mm Bore	ARRMA	direct · Optional part

Pins and clips (3)

Number	Name	Brand	Fit
ARA-2151	Wheel Hex Pin Set 2x10mm	ARRMA	direct
ARA-3785	CVD Driveshaft 44mm (2), 2mm Pin	ARRMA	direct
ARA-3787	Rear Dogbone 40.5mm (2), 2mm Pin	ARRMA	direct

Screws (15)

Number	Name	Brand	Fit
ARA-2714	Cap Head Screw M2.5x20mm	ARRMA	direct
ARA-2716	Button Head Screw M2.5x5mm	ARRMA	direct
ARA-3607	Button Head Screw Pin, M3x20mm	ARRMA	direct
ARA-5145	Cap Head Screw M2.5x7mm (Pre-Threadlocked) - 6pcs	ARRMA	direct
ARA702007	Cap Head Screw M2.5x16mm	ARRMA	direct
ARA702010	Cap Head Screw M2.5x8mm	ARRMA	direct
ARA702011	Cap Head Screw M2.5x12mm	ARRMA	direct
ARA702012	Cap Head Screw M2x10mm	ARRMA	direct
ARA702013	Button Head Screw Pin M3x24mm	ARRMA	direct
ARA702015	Step Screw M2.5x16mm	ARRMA	direct
ARA702017	Flat Head Screws, M2.5x12mm	ARRMA	direct
ARA702018	Flat Head Screws, M1.6x12mm	ARRMA	direct
ARA702019	M2.5x12mm 5.5mm Hex Head	ARRMA	direct
ARAC9813	Flat Head Screws, 3x8mm	ARRMA	direct
ARAC9900	Set Screw 3x3mm	ARRMA	direct

Shock springs (1)

Number	Name	Brand	Fit
ARA-3596	Front Spring Set Type F - 4.08N/mm	ARRMA	direct

Shocks (4)

Number	Name	Brand	Fit
ARA-4777	Shock Shaft set 2.5x20mm	ARRMA	direct
ARA-4778	Shock Parts Set Composite Type F	ARRMA	direct
ARA-4780	Shock Body 7x14.5mm Type F	ARRMA	direct
ARA-4781	Shock Cap (4), Gunmetal	ARRMA	direct

Spur gears (1)

Number	Name	Brand	Fit
ARA-3786	Spur Gear 59T 0.5 Mod	ARRMA	direct

Steering (2)

Number	Name	Brand	Fit
ARA-3442	Servo Saver Set V3	ARRMA	direct
ARA-3590	Steering Set Type F	ARRMA	direct

Suspension (6)

Number	Name	Brand	Fit
ARA-3589	Hub Set, Type F (Front/Rear)	ARRMA	direct
ARA-3591	Front Suspension Arm Set Type F	ARRMA	direct
ARA-3592	Rear Suspension Arm Set Type F	ARRMA	direct
ARA-3605	Hingepin 2.5x12mm	ARRMA	direct
ARA-3606	Hingepin 2.5x28mm	ARRMA	direct
ARA320750	Hingepin 2.5x37mm	ARRMA	direct

Wheels (1)

Number	Name	Brand	Fit
ARA-3598	Wheel Cover Set, 5 Spoke	ARRMA	direct

Other (1)

Number	Name	Brand	Fit
ARA-3766	Foam Pads Set	ARRMA	direct

Data: infraction-grom.toml on GitHub · report an error