gear-2nd-z16-tree-primary-tmkart-r1, r2-box-speed-magickart
Tm racing

(2) Pinion 2nd Z16 Primary Tree TMKART R1-R2

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€29.99
Tax included

Presentation: TMKART transmission accuracy

The 2nd speed gear z16 is a high precision piece for the primary shaft of gear motors TMKART R1 and R2. This pinion is designed to support significant mechanical shocks during ultra-fast reports in competition.

  • Number of teeth (Z16): With its 16 teeth, it defines the specific demultiplication ratio of the second speed to optimize the tight turn output restart.

  • Treated steel: Made in a special high-strength steel with thermal surface treatment to limit tear from teeth and crabts.

  • R-Series reliability: Developed specifically for the architecture of the motors R1 and R2, guaranteeing a perfect alignment on the primary shaft.


- Technical specifications

Feature Details
Mark TMKART (TM Racing - Italy)
Position Primary tree
Report 2nd speed
Number of teeth 16 (Z16)
Material High performance cemented steel
Compatibility TM R1, R2 (and R3 depending on the factory specifications)

- Installation and maintenance

  1. Inspection of the crabts: When replacing, systematically check the status of the adjacent pinion crabts and selection ranges.

  2. Lubrication: Use a high quality gearbox oil (SAE 30 type or KZ specific oil) to ensure a constant oil film on the teeth.

  3. Lateral calibration: Check the lateral game using the original wrestling washers (such as the 22mm silver washer) to ensure a precise locking of the reports.


💡 Michel's trick

"The 2nd speed is one of the most sliced reports on the winding circuits. The trick: If you feel a 'jump' speed or a difficulty to lock the second, do not wait. My Pro Council: A labeled Z16 teeth can cause a cascade wear of all the gnat. During each box revision on your R1 or R2, pass a blow gun and inspect each tooth to the projector to detect the slightest trace of 'Pitting' (tear of metal). "


❓ FAQ SEO (Frequently Asked Questions)

Q: Is this pinion compatible with old KZ10 or KZ10C boxes?

A: No, the sprockets for R-Series (R1, R2) models have specific technical characteristics and machining that differ from previous generations.

Q: Should the corresponding pinion on the secondary tree at the same time?

A: This is not mandatory if the opposite pinion is in perfect condition, but for perfect harmonization of contact surfaces, it is often better to replace the sprocket torque.

Q: How to recognize a TMKART original sprocket?

A: The original TMKART parts recognize the quality of their finish and, often, at a laser marking or a specific engraving of the plant on the side side.

18TM40568

Specific References

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