🛠️ Complete description of the original box output sprocket TM KART - not 428 - from 14 to 20 teeth

Adjust the transmission of your karting with a millimeter precision thanks to the tM KART official box output gear. Mistress of the secondary transmission of your 125CC gearbox engine, this gear is installed directly on the box output shaft to drive the string to the rear crown.

Machined in high quality carbon steel and then subjected to heavy thermal cementation, this original gear resists traction constraints, transmission shocks when changes in reports on the fly and premature wear. Its teeth cutting at 428 guarantees ultra-fluid chain flow, limiting friction losses and ensuring you from 100% of the engine torque to the track.

Available in a wide range of teeth (from 14 to 20 teeth), it allows you to ideally calibrate your demultiplication according to the characteristics of each circuit (winding track requiring racking or quick drawing requiring high peak speed).

👨🔧 Tip in Michel (the mechanical corner)

* "Hi the kings of the Braquet! The box output gear on a TM, it's the key element to set your transmission according to the plot. But be careful, with the KZ engines that send a potato of hell, this pinion takes a colossal load with each realer. !

My stand trick for the maintenance and choice of your TM pinion: laser alignment, hot lubrication and nine circlips !

When you change a pinion to adapt your transmission report, always inspect the condition of the teeth. If you see that the teeth form 'hooks' or are remaining like knife blades, change it direct with the chain! A worn gear destroys a new string in 2 sessions.

Reassembly on the secondary tree:

1. Check that the bearing washer and grooves of the tree are clean and greased.

2. Make sure you use a circlips / Stop clips in perfect condition to lock the pinion on the shaft.

3. Align your gear perfectly with the rear crown using a laser alignment tool. A bad alignment causes the string chain and can break the motor housing! "*

📐 Installation guide: step by step

❓ FAQ SEO (Frequently Asked Questions)

Q: How to choose between a pinion of 14, 15, 16, 17, 18, 19 or 20 teeth ?

A:

• Less teeth (eg 14 or 15 teeth): Shortens the transmission. You earn in acceleration, recovery and slowly outflow, but reduce advanced speed.

• More teeth (eg 18, 19 or 20 teeth): Extends transmission. Ideal for large fast circuits with long straight lines to maximize maximum speed.

Q: Is this pinion compatible with all TM kart engines with gearbox ?

A: Yes, the grooves of the box output tree are standard on all 125cc KZ engine generations at TM Kart (K8, K9, K9B, K9C, KZ10, KZ10B, KZ10C, KZ-R1, KZ-R2 and KZ-R3).

Q: What is the chain step used by this pinion ?

A: This original sprocket is machined in step 428, the universal standard for the secondary transmission of 125cc gearbox karts (Kz).