3RACING KZ-07B Outer Tuned Ball Differential Shaft Rebuild Kit for Kyosho Mini-Z MR-015  [KZ-07B]

Kyosho Mini-Z MR-015 Rebuild Kit For Outer Tuned Ball Differential Shaft - 3RACING KZ-07B
Price:
USD$1.90
Brand:
3Racing
Model:
KZ-07B
Condition:
Brand New
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Technical brief for Kyosho Mini-Z MR-015 differential service

The 3RACING KZ-07B rebuild kit supplies a direct replacement outer tuned ball differential shaft for the Kyosho Mini-Z MR-015, intended to restore consistent differential action. This part is suited to racers and tuners who require repeatable handling from session to session.

Fitment, geometry and performance

Engineered to match MR-015 dimensions, the 3RACING kit delivers correct shaft alignment and ball seating to reduce play and uneven torque transfer. Proper installation maintains predictable lateral grip and throttle response in competition settings.

Installation procedure and setup tips

Follow a methodical assembly sequence, verify bearing preload and ball pocket cleanliness, and use conservative lubrication to avoid drag. Combine this rebuild with diff tuning adjustments to dial in on-track balance.

What inspection steps ensure correct installation?

Check shaft straightness, confirm ball seating, and verify smooth rotation before final torquing. Any binding indicates contamination or incorrect part orientation.

Should I adjust diff preload after fitting?

Yes. After replacing the shaft, recheck preload and diff action under load. Small preload changes can significantly affect corner entry and mid corner balance.

Recommended maintenance interval for race use?

For frequent racing, inspect the differential after every event and consider a rebuild or refresh every few race days depending on track abrasiveness and driving style.