Home Best Sellers AKILL® RACING x BOOST PISTON®: Nitrided HD Differential Cups for Losi 5ive-T, 30°N & Rovan
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AKILL® RACING x BOOST PISTON®: Nitrided HD Differential Cups for Losi 5ive-T, 30°N & Rovan

AKILL® RACING x BOOST PISTON®: Nitrided HD Differential Cups for Losi 5ive-T, 30°N & Rovan

$90.00 USD
$90.00 USD
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Mad Dog in Action
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AKILL® RACING ✕ BOOST PISTON®
Extreme Duty Drivetrain Engineering

🔥 12S MAX-POWER PROVEN

Engineered for industry-leading power:

Hobbywing MAX4 + 70125 (12S System)

Proven over 12 months of extreme abuse by the Boost Piston® team. Even under the instant torque snap of the 70125 motor, AKILL cups remain zero-deformation and notch-free.

AKILL 12S Test Track
REAL TRACK TESTED
STOCK OEM

✘ Soft material, deep notching, causes vibration

AKILL HD

✔ Gas Nitrided, mirror finish, perfect concentricity

🛡️ FULL-ENCLOSURE DESIGN

Safety first. The unique enclosed cup design completely eliminates the risk of drive pins being ejected at high RPM, protecting expensive surrounding chassis components.

🔄 DUAL-DRIVE SLOTS

Double the lifespan. We engineered two sets of cross-drive slots. When the first set wears out, simply rotate the shaft 90° to engage a fresh set of slots for a like-new drive experience.

🎯 ULTRA-PRECISION FITMENT

Diff Housing Bore: 10.04mm

AKILL Cup OD: 9.98mm

✅ Perfect Match for Losi OEM & FLM CVDs Internal structure is precisely aligned for seamless engagement with drive shaft dogbones, maximizing drivetrain efficiency.
✅ 0.06mm Diff Housing Golden Clearance 9.98mm OD paired with a 10.04mm housing bore. This 0.06mm is scientifically reserved for perfect differential housing fitment, ensuring smooth rotation without binding or overheating at high speeds.

🛠️ MUST-READ for Clone Car Owners (Rovan / KM / 30°N)

AKILL products are developed based on Losi OEM and FLM standards. However, due to some clone brands (e.g., Rovan, KM) having drive pins that are not chamfered at the factory and have sharp, oversized edges, they may not insert smoothly into AKILL's high-precision cups.

Free Grinding Bit
SOLUTION: FREE High-Hardness Grinding Bit Included

If installation feels tight, use this included bit to slightly chamfer the clone car's pin edges or gear box bores to resolve tolerance issues for a perfect fit.

⚠️ The Hard Truth About Materials & Appearance

Why isn't the surface shiny?

Shiny parts are usually low-carbon stainless steel, which has low hardness and deforms instantly under 12S power. To withstand MAX4+70125 violence, we must use high-carbon alloy steel. We sacrificed "visual bling" for top-tier mechanical strength.

About the dark surface oil

That is native heat-treatment anti-rust oil, a barrier protecting the high-carbon steel. Please install directly, DO NOT WASH IT OFF! If you insist on polishing it to a mirror finish, you MUST perform frequent maintenance with WD40, otherwise, high-carbon steel will rust easily when exposed to air (this is a physical property, not a quality issue).

Compatible Models: Losi 5ive-T/B/2.0 | 30°N DTT/DNT | Rovan & KM LT/X2

AKILL® RACING
RE-ENGINEERING THE 1/5 DRIVETRAIN
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