Stomp Z3R-140

Back in 2007, Stomp took the legendary YX140 engine and squeezed it into a pit bike named the SuperStomp 140. That combination of a lightweight aftermarket chassis and a seriously lively engine helped put Stomp firmly on the map.

The Z3R-140 continues that legacy. At its heart is the immense 4-stroke, single-cylinder YX140, using Stomp’s SR140C Z40 specification. But the “R” in Z3R stands for Race, and this bike has always been about much more than just its engine.

The lightweight single-backbone chassis keeps mass down and agility high. An alloy swingarm, nitrogen-filled fully adjustable DNM rear shock and fully adjustable SP 735 USD forks give the rider the ability to fine-tune the bike for different tracks, terrain and rider weights.

For 2026, we’ve pushed the Z3R package even further.

The cockpit now features Series 6 alloy variable-diameter handlebars, new grips, new black upper and lower clamps and a Stomp-logo bar pad cover. It’s a substantial visual upgrade, but one designed around the controls and contact points that matter when you’re riding hard.

The exhaust system has also been updated with a new lower-noise Power bomb muffler.

Further upgrades include an updated rear brake, titanium-colour front brake, titanium-colour wheel hubs, black spokes and nipples and a titanium-finish engine bottom support, bringing a sharper and more cohesive factory finish across the whole bike.

Underneath those updates is still the Z3R riders know: a lightweight, compact race-focused pit bike with quality adjustable suspension and the legendary YX140 providing the power.

The Z3R gives you more room than a traditional small-wheel pit bike while remaining light enough to throw around. Aggressive styling, distinctive factory graphics and carefully selected race components complete the package.

This is the flagship 140 in the Stomp range — the result of almost two decades of pit bike development, racing and refinement.

Stomp on the opposition. Turn up the volume!