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Axial 2-Speed Hi/Lo Transmission Components
Brand: Axial
Part No: AX31181
Supplier Stock: Expected May 23rd
Request Stock NotificationUpgrade your drivetrain control with the Axial AX31181 2-Speed Hi/Lo Transmission Components, a comprehensive conversion kit designed to add selectable gearing to suitable 1/10 scale Axial Yeti transmissions (suggested compatibility). This package focuses on durability and smooth operation, pairing heat-treated, hardened, machined steel gears with a robust slider for confident shifting on the fly from your transmitter.
The included gear set delivers a 2:1 reduction for precise crawling in Lo gear, while Hi gear matches the stock 1.08:1 ratio. An alternative Hi Gear Option further increases top speed with a 0.93:1 ratio, giving you the flexibility to tailor performance to the terrain. A full set of cartridge bearings is supplied, making this an ideal opportunity to refresh the transmission while installing the 2-speed.
Key Features
- Heat-treated, hardened, machined steel gears for long-lasting strength
- Four-tooth engagement slider for accurate, rapid shifts on the fly
- Selectable gearing: 2:1 Lo, 1.08:1 Hi, plus 0.93:1 Hi Gear Option
- Complete cartridge bearing set for smooth, efficient running
- Micro or standard servo mounting options with servo saver to protect the servo
What’s Included
- Machined steel gears: 18T, 28T (Hi), 26T (Hi Gear Option), 36T, and gear slider
- Full set of transmission cartridge bearings (AXA1221, AXA1218)
- All necessary hardware (AXA146, AXA0145, AXA116, AXA0147, AXA0109, AX31073)
- Servo saver system with two servo horns and three spline adapters (23T/24T/25T) – AX31009
- Servo mounting brackets for micro and standard servos
- Gear ratios: Lo 2:1, Hi 1.08:1, Hi Gear Option 0.93:1
Suggested Compatibility
- Designed for use with 1/10 scale Axial Yeti transmissions (suggested compatibility)
Setup Notes
- Shifts can be made while driving via your radio
- Requires a radio system with a 3rd channel for shifting
- Use a servo with at least 80 oz-in of torque for reliable operation
Axial part number AX31181 brings proven materials and thoughtful hardware selection together to deliver a clean install and versatile gearing for mixed crawling and high-speed running.
Secured by Stripe
2-speed Hi/Lo Transmission conversion kit for all 1/10 scale YETI transmissions.
What’s great about this “not so generic” 2-speed kit is that it comes with a full set (3) of heat treated hardened steel machined gears, plus an additional optional high speed gear (Hi Gear Option), full set of cartridge bearings, two different servo mounting options (micro or standard), servo saver system and all necessary hardware to complete the installation. Gearing wise, first gear ends up a being a 2:1 reduction intended for slow technical crawls while the Hi Gear (28T) gear is based off the stock 1.08:1 ratio and Hi Gear Option (26T) increases top speed with a 0.93:1 ratio. Shifting between the gears can be done on the fly while driving from the convenience of your radio. This system does require the use of radio system that features a 3rd channel for operation.
HEAT TREATED HARDENED STEEL MACHINED GEARS
Knowing the harsh environments this system is intended for; the goal was to produce a gear set strong enough to take on anything thrown at it. This lead to developing a steel gear set that has been hardened, heat-treated and machined to tight tolerances for optimum performance. The 2-speed gear slider features the same treatment as the gears along with having four-tooth engagement design for accurate and rapid gears shifts on the fly.
FULL SET OF CARTRIDGE BEARINGS
Supplied in the 2-speed kit is a full set of cartridge bearings (6), which is great because while you’ve got the transmission apart it makes for a great rebuild opportunity.
SERVO OPTIONS
Actuating the gear shifting can be done with either micro or standard sized servos thanks to the multiple mounts offered in the kit. It’s suggested to use a servo that features at least 80oz/in of torque to properly complete the shift. The kit features a servo saver design for increased servo longevity and two different servo horns (one long, one short) depending on servo used along with three inserts (23T, 24T, 25T) accommodating for various servo spline counts.
HARDWARE
Within the package all necessary hardware needed to complete the installation of the 2-Speed conversion into your YETI ™ transmission is supplied, including the servo mounting screws.
• Heat treated, hardened, and machine cut gears (18T, 28T, 26T, 36T, slider)
• Full set of transmission cartridge bearings (AXA1221 and AXA1218)
• All necessary hardware (AXA146, AXA0145, AXA116, AXA0147, AXA0109, AX31073)
• Servo saver system, w/ two servo horns, three spline adapters (AX31009)
• Servo mounting brackets (micro and standard)
• Lo Gear ratio: 2:1
• Hi Gear ratio: 1.08:1
• Hi Gear Option ratio: 0.93:1
Key Info:
- Brand: Axial
- Part No: AX31181
- Barcode: 816874013073
- Fitment: Option Part
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