OXA KR1 Edition Silencer. Short version for maximum power and pure 2T sound. Introducing the OXA Factory KR1 Silencer - a high-performance, compact muffler engineered for motocross and cross-country riders. Built from black anodized aluminum with a durable steel end cap, this shorter (36 cm) design maximizes engine response through improved power delivery and authentic 2-stroke sound. Tailored for each model, it mounts directly on the original expansion pipe for easy installation. Meticulously crafted in Spain and tested extensively under bench and real-world conditions, the KR1 Edition delivers both performance and longevity for riders pushing the limits. Features: High Performance: Short version for maximum power output. Pure Sound: Enjoy the authentic 2-stroke sound that enthusiasts crave. Durable Construction: Built to withstand the rigors of off-road and racing environments.