The connecting Foot Cage (Dimensions 15x19x19.6 mm) is a high precision mechanical part of the original manufacturer origin (Original TM Kart / TM Racing Parts). It is specifically designed to ensure the connection and pivoting of the piston axis at the rod foot on the latest generation 125cc gear motors: the TM KZ-R1 and TM KZ-R2, as well as the previous versions of the brand (KZ10, KZ10B, KZ10C).
This racing cage is distinguished by its silver surface treatment (silver veneer) applied on its reinforced steel frame. In competition, the high-engine of a KZ undergoes extreme rotation regimes (more than 15,000 rpm) and very high combustion temperatures. Silver treatment offers an extremely low friction coefficient, maximum thermal dissipation and excellent emergency lubrication properties. This avoids the risk of micro-seizure and failure of needles under strong load, ensuring the absolute reliability of your mobile crew.
Technical characteristics:
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Inner diameter (axis): 15 mm
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Outside diameter (rod foot): 19 mm
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Total width: 19.6 mm
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Finish: Silver treated frame (Racing specification)
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Engine compatibility: TM Kart KZ-R1, KZ-R2, KZ10C, KZ10B, KZ10 (all 125cc KZ models using this axle size).
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Origin: Certified Certified Part TM Kart (Italy)
👨🔧. The Tip in Michel (the corner of the expert)
* "Hi the artists of the gear lever! The piston needle cage is the most demanded piece of your high-engine with the segment. In a KZ-R1 or R2 engine, it takes thousands of slaps at the minute at each Explosion. As much to tell you that you should not laugh with the quality: a cheap adaptable cage that looses, and it is a complete engine (piston, rod, cylinder, housings) which leaves to the trash in a fraction of a second !
My mandatory mechanic trick: replace this original cage with each piston change.
Never attempt to save the price of a needle cage by going up the old on a new piston. Even if it seems beautiful to the naked eye, its needles have memorized the thermal stresses and wear of the old piston.
At the time of assembly, generously soak the 15x19x19.6 mm cage with mixing oil 2 time 100% high quality synthesis (like the Lexoil or the Shell Advance Kart). Do not go up dry !
Another small workshop secret: Check that the piston pin is perfectly fluid and fat inside the cage once positioned in the rod. If there is a hard point or a sensation of sand grain, clean up the brake degreaser before oil. An assembled high-engine with care and lubricated is the assurance of having all the power available from the first track tours! "*
📐. The Haut-Engine Replacement Guide: Step by Step
1.Demontage of the high engine:10 min.Put the kart on his stand trolley. Drain the cooling circuit. Remove the cylinder head nuts, then gently remove the cylinder up to release the piston access.
2.Extraction piston and old cage:5 min.Turn the opening of the bottom-motor with a clean cloth to prevent a clip into the housings. Remove the piston axle clips with a thin clip, hunt the axle and remove the piston. Take out the old needle cage housed in the rod foot.
3.Prepare of the new part:5 min.Clean the rod foot (the top of the rod) using brake cleaner and dry. Take your original TM silver cage. Follow the trick in Michel: Pour a few drops of 2 pure-time oil on the needles and turn them by hand to distribute the lubricant.
4.Remontage final and geometry:15 min.Insert the oiled cage from 19.6 mm wide into the bore of the rod. Present the new piston (attention to the direction of the arrow oriented towards the exhaust), slide the axis through the piston and the cage. Install new piston clips, remove the protective cloth, reassemble your cylinder with a new base gasket and tighten the cylinder head to the recommended torque.
❓. FAQ SEO (Frequently Asked Questions)
Q: Why does the original TM needle cage have a silver appearance ?
A: The silver veneer on the steel cage is not aesthetic, it is purely technical. Money acts as a solid lubricant of excellent quality. In the case of micro-cutting the oil film at a very high speed or at a limited (poor) carburation, the silver layer prevents direct steel-steel friction, thus avoiding instantaneous needle locking and reducing the wear of the axis of the axis of Piston.
Q: This cage of 15x19x19.6 mm compatible with the engines of other brands (Iame, Vortex, Rotax) ?
A: This model is standardized for 15 mm axis dimensions and the outdoor diameter's 19 mm rods found on almost all TM Racing engines in the KZ category. If a motor of another brand (such as an Iame Screamer or a Vortex RSZ) shares exactly the same geometric dimensions (15x19x19.6 mm), it can technically install, but it remains specifically developed to meet tolerances TM Kart engines factory.
Q: How do you know if my current needle cage is tired ?
A: An end-of-life cage generally has traces of bluish or brunette coloring (excessive overheating sign), a perceptible radial game when handling the piston axis in the rod, or pronounced marking (stries or flats) on the surface of steel needles. In competitive karting, there is no risk: it changes preventively from each piston revision.