If you grew up near a dirt track or followed the rise of European street bikes, the 1990s are a storied period for KTM — a time when the company honed its off-road machines and branched into road-oriented models. That mix of competition tech and street ambition defined many of the decade’s most talked-about bikes.
There are 11 1990s KTM Motorcycles, ranging from 125 EXC to 640 Duke. For each model you’ll find Years produced (1990s),Displacement (cc),Class and engine (max 15 words) — the full list you’ll find below.
Which 1990s KTM models are best for trail and light enduro use?
Look for the EXC line (125 EXC, 200/250/300 variants) for lightweight, nimble trail performance; two-stroke EXCs are lively and easy to maintain, while the four-stroke variants offer smoother power for longer rides.
How hard is it to source parts and keep a 1990s KTM running?
Basic mechanical parts and wear items are generally available through aftermarket suppliers and specialist dealers; engine internals and electricals are straightforward for a competent mechanic, and online forums plus clubs help locate rarer components.
1990s Ktm Motorcycles
| Model | Years produced (1990s) | Displacement (cc) | Class and engine (max 15 words) |
|---|---|---|---|
| 125 SX | 1990-1999 | 125 | Motocross, 2-stroke single |
| 250 SX | 1990-1999 | 250 | Motocross, 2-stroke single |
| 300 SX | 1990-1999 | 300 | Motocross, 2-stroke single |
| 500 SX | 1990-1999 | 500 | Motocross, 2-stroke single |
| 125 EXC | 1996-1999 | 125 | Enduro, 2-stroke single |
| 250 EXC | 1996-1999 | 250 | Enduro, 2-stroke single |
| 300 EXC | 1996-1999 | 300 | Enduro, 2-stroke single |
| 620 Duke | 1994-1997 | 620 | Street, LC4 single |
| 640 Duke | 1998-1999 | 640 | Street, LC4 single |
| 640 Adventure | 1998-1999 | 640 | Dual-sport/Adventure, LC4 single |
| 620 LC4 Enduro | 1996-1999 | 620 | Enduro/Dual-sport, LC4 single |
Images and Descriptions
125 SX
Lightweight, race-focused 125cc two-stroke motocross bike that defined KTM’s small-class competition presence in the 1990s. Known for agile handling, high-revving power and easy tuning; popular with club racers and collectors seeking authentic period motocross machines.
250 SX
Mainstay 250cc two-stroke motocross racer offering strong mid-to-top-end power and rugged KTM chassis. A cornerstone of KTM’s factory and privateer line-ups through the decade; desirable for collectors who value classic two-stroke performance and race pedigree.
300 SX
High-torque 300cc two-stroke option aimed at riders wanting extra tractable power in rough conditions. Combined KTM’s off-road DNA with competitive performance; sought after by enthusiasts who appreciate robust, big-bore two-stroke character and period race history.
500 SX
Big-bore two-stroke motocross machine delivering explosive power and a raw riding experience. Less common than smaller SXs, the 500 model is notable for its rarity and collector appeal among fans of vintage high-displacement two-strokes.
125 EXC
Street-legal enduro iteration of KTM’s competition bikes that added lights, softer suspension and broad usability. The 125 EXC was nimble for trail riding and popular with off-road commuters; early EXC models are valued by collectors for transitional design.
250 EXC
Versatile, street-legal 250cc enduro that balanced trail-friendly power with off-road capability. Built from KTM’s MX heritage, the 250 EXC became a go-to for enduro events and dual-purpose riders; early examples are collectible for their rugged simplicity.
300 EXC
Trail-focused 300cc enduro offering strong low-end torque and durable construction for hard riding. Useful for both competition and long trail days, the 300 EXC is prized by riders seeking big-bore two-stroke usability and 1990s KTM character.
620 Duke
One of KTM’s first road-focused LC4 singles, the 620 Duke blended lightweight chassis and torquey single-cylinder power for a naked-street bike experience. Notable for introducing LC4 street performance; early Dukes are collectible for their pioneering role in KTM’s road range.
640 Duke
Updated LC4 naked with increased displacement and improved refinement. The 640 Duke offered strong midrange torque, simple servicing and distinctive KTM styling; early 640s are valued by collectors who follow the LC4 single evolution into the modern era.
640 Adventure
Long-travel, road-capable adventure bike that combined LC4 single torque with durable touring ergonomics and off-road capability. Early Adventure models helped define KTM’s adventure lineage and are sought after by collectors interested in the brand’s long-distance off-road evolution.
620 LC4 Enduro
Large-displacement LC4 enduro/dual-sport offering strong low-end power for long trails and utility use. Bridged KTM’s competition roots with practical long-distance capability; desirable among riders who want big single torque in a 1990s off-road package.
