Reduced unsprung weight for better handling and more agile driving.

Consistent long-term performance, even in intensive use or demanding environments.

Specific cut-outs prevent the accumulation of mud, sand or grit, which extends transmission life and reduces premature wear.

Perfect fit thanks to meticulous machining for easy assembly.

Forged and precision-machined for superior durability and wear resistance.

Optimized power transfer thanks to JT's advanced hardening process.

Provides superior hardness, up to six times longer service life than a 7075-T6 aluminum crown.

Much lighter than a steel crown, which reduces unsprung mass and improves the bike's responsiveness.

Designed for many Kawasaki and Suzuki models, including RMX 450 Z (2010-2017) and DR 250 S (years 1979-2026).

Induction-hardened, high-carbon steel outer ring → up to 6 times longer service life than a conventional 7075-T6 aluminum ring.

Increases mechanical strength and reduces surface tension, improving durability

Allows original replacement or modification of gear ratios to adapt engine behavior (acceleration vs. top speed).