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Micro K’NEX roller coasters use dedicated coaster cars and flexible plastic track. Over the years, K’NEX produced several car designs, track shapes, colors and launcher systems.
An important distinction is the track connection system. Earlier Micro K’NEX coaster track uses metal pins and corresponding holes, while later track uses molded plastic lugs and slots. These two track generations are not directly compatible.
This page covers coaster-specific Micro K’NEX parts: coaster cars, car links, track and launch systems. General Micro K’NEX rods, connectors, clips, chain, chain guides and gears are covered on their respective K’NEXCHANGE parts pages.
Standard and Early Coaster Cars
| Part number | Color / version |
|---|---|
| 24150GR | Green |
| 24150OR | Orange |
| 24150MB | Metallic Blue |
| 24150W | White |
| 24151 | Orange |
| 24151 | Red — matte variant observed |
| 24151 | Red — glossy variant observed |
| 24151 | Purple variant observed |
| 24152 | Metallic Blue |
| 24152G | Gold |
| 24152MG | Metallic Green |
| 24152Y | Yellow |
| 2415521 | Red |
| 24153 | Silver |
| 20590MR | Metallic Red |
| 20590G | Gold |
| 20590S | Silver |
| 99906 | Black / Skull car |
Several visually or functionally similar Micro K’NEX coaster cars occur under different part-number series. The exact relationship between all 24150-, 24151-, 24152- and 20590-series cars has not yet been fully established. They are therefore retained under their documented numbers rather than being presented as aliases.
Some additional finish and decoration variants are known from physical parts, including matte, glossy and decorated cars. Where an official suffix has not been independently verified, the physical variant is recorded without presenting the suffix as an official K’NEX part number.
The 24150-series is particularly significant historically. Orange and Green cars occur with the early Micro K’NEX parts used in Vertical Vengeance, while other colors show that this car family was not exclusive to that set.
Follower Coaster Cars (no pin)
| Part number | Color |
|---|---|
| 24157 | Red |
| 24157 | Blue variant observed |
Part 24157 is documented as a Coaster Car Follower. Some descriptions use the more general name Coaster Car.
The distinction is useful because follower cars do not have the same chain-engagement arrangement as standard chain-lift cars.
Underhung Coaster Cars
| Part number | Color / type |
|---|---|
| 24157X | Purple — Underhung Coaster Car |
| 2912001 | Yellow — Underhung Launcher Coaster Car |
Underhung cars run beneath the coaster track rather than on top of it.
The Yellow 2912001 is a specialized launcher version used with the 24455 Yellow Motorized Launcher, including in Hyperspeed Hangtime.
It should not be treated simply as a Yellow version of 24157X: it belongs to a specific launcher arrangement.
Light-up and Special Coaster Cars
| Part number | Color / type |
|---|---|
| 99145 | Transparent — Light-up |
| 99210G / 3310030 | Green — Light-up |
| 99210 | Metallic Red |
| 99906 | Black / Skull |
The Transparent and Green cars are documented as Light-up Coaster Cars.
Part 99210 Metallic Red is also a confirmed Micro K’NEX coaster car, but its available description does not establish with sufficient certainty that it is a light-up version. It is therefore not automatically classified as one here.
Streamlined and Later Coaster Cars
| Part number | Color / version |
|---|---|
| 3194001 | Streamlined Coaster Car — Blue observed |
| 3194001 | Streamlined Coaster Car — White observed |
| 3310045 | Green — later 34042-series car |
The 3194001 Streamlined Coaster Car occurs with later coaster designs and is also associated with the Stomp Rocket launcher system.
The later 3310045 car occurs in the 34042 parts generation. It is retained under its own number rather than assumed to be equivalent to one of the earlier coaster-car designs.
Coaster Car Link
| Part number | Part |
|---|---|
| 24161 | Micro K’NEX Coaster Car Link |
The Coaster Car Link is used to connect Micro K’NEX coaster cars to form a train.
This is a coaster-specific component and is therefore included here rather than with general Micro K’NEX clips.
Micro K’NEX Coaster Track
Micro K’NEX coaster track is flexible and can be used to create hills, drops, loops, twists and other coaster elements.
Important: Pin and Slot Track
There are two important generations of Micro K’NEX coaster track.
Earlier track — pin-jointed: uses metal pins at one end and corresponding holes at the other.
Later track — slot/lug connection: uses molded plastic lugs and corresponding slots.
These versions are not directly compatible. Color alone therefore does not determine compatibility. Check the connection at the ends of the track before combining track from different sets.
203 mm Straight Track — No Pin
| Part number | Color |
|---|---|
| 847700 | Black |
| 24351B | Blue |
| 24351L | Mid Blue |
| 24351G | Green |
| 99138OR | Orange |
| 24351P | Purple |
| 24351R | Red |
| 24351W | White |
| 24351A | Yellow |
| 847705 | Yellow / Fluorescent Yellow |
| 847738 | Glow-in-the-dark |
| 99138 | Color may vary |
These track sections are approximately 203 mm / 8 in. long and use the later no-pin connection.
410 mm Straight Track — No Pin
| Part number | Color |
|---|---|
| 847716 | Green |
| 23825A | Light Blue |
| 99167 | Orange |
| 99165O | Orange — additional number reported |
| 99165 | Red |
| 99147 | White |
| 99157 | Yellow |
These sections are approximately 410 mm / 16 in. long.
More than one Orange part number has been documented. The precise relationship between 99167 and 99165O has not yet been established sufficiently to treat them as aliases, so both are retained.
215 mm Pin-jointed Track
| Part number | Color |
|---|---|
| 23822H | Orange |
This shorter early track uses the pin-and-hole connection.
410 mm Pin-jointed Track
| Part number | Color |
|---|---|
| 23820R | Red |
| 23821 | Yellow |
| 23822 | Orange |
| 23823 | Green |
| 23824 | Blue |
These belong to the earlier metal-pin track generation.
The Yellow 23821 track is particularly associated with early Micro K’NEX construction, including Vertical Vengeance.
A Red example has also been recorded under 23821. Since other documented information identifies 23820R as Red and 23821 as Yellow, the Red 23821 observation is retained as an uncertainty rather than silently reassigned to another number.
Curve Left
| Part number | Color |
|---|---|
| 2447007 | Black |
| 99903 | Blue |
| 2447004 | Glow-in-the-dark |
| 99168 / 2447001 | Green — old/new numbering |
| 2447003 | Orange |
| 2447008 | Red |
| 99160W | White |
| 2447002 | Yellow |
| 2447003X | Color may vary |
Curve Left is a separate molded track shape and should not be confused with the Semi-circle track.
Curve Right
| Part number | Color |
|---|---|
| 2448007 | Black |
| 99159B | Blue |
| 2448004 | Glow-in-the-dark |
| 99142 / 2448001 | Green — old/new numbering |
| 99159MB | Mid Blue |
| 2448003 | Orange |
| 2448008 | Red |
| 99159W | White |
| 99159 / 2448002 | Yellow |
| 2448003X | Color may vary |
An Orange example associated with 2448008 has also been physically recorded, while other documented information identifies 2448008 as Red. Until that discrepancy is resolved, Red remains the documented color and the Orange observation is retained as an uncertainty.
Semi-circle Track
| Part number | Color |
|---|---|
| 847800 | Black |
| 847801 / 99904 | Blue |
| 99878B | Mid Blue |
| 847816 | Green |
| 99880 / 847808 | Orange |
| 847838 | Glow-in-the-dark |
| 847802 | Red |
| 99878W | White |
| 847805 / 99879 | Yellow |
Semi-circle track forms a much larger fixed curve than the individual Curve Left and Curve Right sections.
Some colors occur under more than one documented number. Where the exact relationship between those numbers has not yet been established, both numbers are retained rather than automatically treating them as aliases.
Later 34042 Track
| Part number | Type | Color |
|---|---|---|
| 3310049 | 140 mm Straight Track | Yellow |
| 3310052 | 125 mm Curved Track | Yellow |
These later track parts have different dimensions from the familiar 203 mm and 410 mm sections. They are therefore listed separately rather than treated as later numbers for the older track.
Launchers & Powered Coaster Systems
Micro K’NEX coaster sets have used several different systems to launch or propel coaster cars.
Red Motorized Launcher
| Part number | Color |
|---|---|
| 99164 | Red |
The Red Motorized Launcher is used with launcher-specific coaster cars such as 24454C Red.
Two physically different 99164 launchers have been documented:
PIN-track connection
Slot-track connection
Both carry the same 99164 base number. The available part-number information does not clearly distinguish these physical versions, so compatibility should be checked from the actual launcher rather than from the number alone.
Red Launcher Coaster Car
| Part number | Color |
|---|---|
| 24454C | Red |
This car is specifically associated with the motorized launcher rather than the normal chain-lift arrangement.
Yellow Motorized Launcher
| Part number | Color |
|---|---|
| 24455 | Yellow |
The Yellow Motorized Launcher uses the unusual 2912001 Yellow Underhung Launcher Coaster Car.
Unlike the Red 99164 launcher, separate PIN- and slot-connection versions of 24455 have not yet been verified.
Slingshot Launcher
| Part number | Part |
|---|---|
| 99890 / 99890Y | Slingshot Launcher |
The Slingshot Launcher attaches to Micro K’NEX coaster track and uses a rubber band to propel the car.
The rubber band itself is a general K’NEX component and is therefore not cataloged here as a Micro coaster-specific part.
Stomp Rocket Launcher
| Part number | Part |
|---|---|
| 3195001 | Stomp Rocket Launcher Assembly |
The Stomp Rocket Launcher is associated with later coaster designs and can be used with the 3194001 Streamlined Coaster Car.
Air-propelled Coaster System
| Part number | Part |
|---|---|
| 3092001 | Air-propelled Coaster Car & Cable |
| 3092001B | Air-propelled Coaster Car |
| 3092001C | Charging Cable |
The air-propelled coaster car forms its own powered system and should not be confused with standard chain-lift or motorized-launcher cars.
Related Micro K’NEX Parts
A working Micro K’NEX coaster also uses ordinary Micro construction parts. These are not duplicated on this page.
See Micro K’NEX Rods for the rods used to construct the supporting structure.
See Micro K’NEX Connectors for the connectors used to construct the structure and support the track.
See Micro K’NEX Clips, Spacers, Caps, Locks & Chain for clips, the small Micro chain and the 850200 Chain Guide used with chain-lift systems.
See K’NEX Gears & Chain for the wider range of gears, sprockets and chain components.
See K’NEX Adapters, Transition & Dual-System Parts for parts designed to connect Micro K’NEX with Classic K’NEX.
For the distinctive early Micro K’NEX generation, including early coaster cars and pin-jointed track, see Vertical Vengeance Coaster — 50080 / 22808.
Identification and Compatibility Notes
Micro K’NEX coaster parts span several generations. Part numbers alone do not always establish whether two visually similar parts are identical, whether a number changed during production, or whether a particular track connection is compatible.
K’NEXCHANGE therefore retains documented and physically observed variants when there is evidence that they exist, even where the exact relationship between two numbers or production versions has not yet been established.
In particular, check PIN versus slot track connections, coaster-car type and launcher type before combining parts from different Micro K’NEX coaster sets.
K'NEXCHANGE 