{"product_id":"pro-circuit-4h01080-t-4-exhaust-performance-upgrade-for-dirt-bikes-250cc-450cc","title":"PRO CIRCUIT 4H01080 T-4 Exhaust Performance Upgrade for Dirt Bikes 250cc-450cc","description":"\u003cp\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your dirt bike’s performance with the PRO CIRCUIT T-4 Exhaust (Part Number: 4H01080). Designed for riders seeking enhanced throttle response and optimal power delivery, this exhaust system offers a significant boost in acceleration and responsiveness. Extensively track- and dyno-tested, the T-4 ensures reliability and top-tier performance under demanding conditions. Moto-House MX recommends this exhaust for racers and enthusiasts aiming for a competitive edge, especially with its USFS-approved spark arrestor that can be easily removed for closed-course riding or racing.\u003c\/p\u003e \u003cp\u003eConstructed with advanced materials and engineering, the PRO CIRCUIT T-4 features a durable steel Allen head screw system for quick repacking and maintenance. Its exclusive E-glass pillow packing not only enhances durability but also contributes to a more consistent sound and performance. Weighing approximately 49 pounds, this exhaust is engineered to deliver maximum power without adding unnecessary weight, making it ideal for aggressive riding styles and performance-focused riders.\u003c\/p\u003e \u003ch3\u003eTop Features: PRO CIRCUIT T-4 Exhaust\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAdvanced Throttle Response: Ensures lightning-quick acceleration for competitive riding.\u003c\/li\u003e \u003cli\u003eTrack \u0026amp; Dyno Tested: Proven to increase horsepower and improve overall engine efficiency.\u003c\/li\u003e \u003cli\u003eEasy Repacking: Steel Allen head screws facilitate quick and straightforward maintenance.\u003c\/li\u003e \u003cli\u003eExclusive E-Glass Pillow Packing: Provides durability, sound consistency, and performance longevity.\u003c\/li\u003e \u003cli\u003eUSFS-Approved Spark Arrestor: Allows for legal use on public trails and provides the option for closed-course racing.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ePro-Tip: For optimal performance, check and replace packing regularly and ensure all screws are tightened properly during installation.\u003c\/p\u003e \u003ch3\u003eFitment List\u003c\/h3\u003e   Year Range Brand Model \u0026amp; Size   2000-2024 PRO CIRCUIT Compatible with 250cc-450cc Dirt Bikes   \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this exhaust compatible with my specific motorcycle model?\u003c\/li\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This exhaust is designed for a wide range of 250cc-450cc dirt bikes; please verify your model and year for proper fitment.\u003c\/li\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I remove the spark arrestor for racing?\u003c\/li\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the USFS-approved spark arrestor can be safely removed for closed-course or racing applications.\u003c\/li\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How often should I replace the packing?\u003c\/li\u003e \u003cli\u003e\n\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Regular inspection and replacement of the pillow packing are recommended every 10-15 hours of riding for optimal performance.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ePair with: High-Performance Air Filters, Motocross Engine Oil\u003c\/p\u003e \u003cp\u003eStop by our local Store Montverde, FL or lightning-fast shipping across the USA. \u003c\/p\u003e\u003cp\u003eMoto-House MX – Choice of Champions – is located in Clermont\/Montverde, FL. The Best Motocross\/UTV \u0026amp; ATV Shop in Central Florida.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eAdvanced Throttle Response: Ensures lightning-quick acceleration for competitive riding.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTrack \u0026amp; Dyno Tested: Proven to increase horsepower and improve overall engine efficiency.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy Repacking: Steel Allen head screws facilitate quick and straightforward maintenance.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eExclusive E-Glass Pillow Packing: Provides durability, sound consistency, and performance longevity.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUSFS-Approved Spark Arrestor: Allows for legal use on public trails and provides the option for closed-course racing.\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"PRO CIRCUIT","offers":[{"title":"Default Title","offer_id":44414466752595,"sku":"4H01080","price":337.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/263101.png?v=1775617668","url":"https:\/\/motohousemx.com\/products\/pro-circuit-4h01080-t-4-exhaust-performance-upgrade-for-dirt-bikes-250cc-450cc","provider":"Moto-House MX","version":"1.0","type":"link"}