{"product_id":"1989-2001-honda-cr500-direct-bolt-on-performance-cylinder","title":"1989-2001 Honda CR500 Direct Bolt-On Performance Cylinder","description":"\u003cp\u003e\u003cb\u003eThe wait is almost over.\u003c\/b\u003e This is exactly what the big bore community has been needing. Stop paying huge amounts of money for worn-out used cylinders that require extensive repair work, or shelling out a fortune for NOS units that still leave you stuck with factory stock performance.\u003c\/p\u003e\n\u003cp\u003eExclusive to TwoStrokesOnly.com, this is the very first entirely new, direct-replacement stock bore cylinder of its kind to hit the CR500 market. We kept the proven characteristics of the original Honda design and strategically modernized the rest to unleash its true potential. No hacking, no case grinding, no headaches—just a massive performance leap and unquestionable reliability in a true bolt-on package.\u003c\/p\u003e\n\u003cp\u003eWhether you are rebuilding a blown top end or looking for the ultimate big-bore upgrade, this cylinder delivers modernized airflow and rugged durability without the need for custom fabrication.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eWhat's Included \u0026amp; Optional Upgrades\u003c\/b\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cb\u003eIncluded in the box:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e(1) All-New CR500 Replacement Cylinder (Stock Bore)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOptional Add-Ons (Select from the drop-down menu):\u003c\/b\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cb\u003ePiston Kit:\u003c\/b\u003e Complete drop-in piston kit ready for installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTop End Gasket Set:\u003c\/b\u003e Everything you need to seal up your fresh top end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTSO Billet Cylinder Head:\u003c\/b\u003e Maximize cooling and performance with our custom billet head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTSO Billet Reed Spacer:\u003c\/b\u003e Optimize intake tract volume and throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTSO Billet Exhaust Flange:\u003c\/b\u003e A heavy-duty, leak-free upgrade over the stock cast flange.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cb\u003eStrategic Porting Evolution:\u003c\/b\u003e We kept what actually worked from the original factory porting and made critical improvements where they were needed most. The result is an incredibly reliable, highly versatile cylinder that puts out more power than any hand-ported OEM unit on the market.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImproved Exhaust \u0026amp; Thermal Management:\u003c\/b\u003e Built around an improved single bridged exhaust port, this design maximizes flow while offering superior piston and ring support. We also engineered improved cooling at the top of the exhaust port duct to relieve thermal stress on the bridge, actively preventing the cracking commonly seen in bridged all-aluminum cylinders like the CR250.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRugged Construction:\u003c\/b\u003e Cast from high-quality aluminum and finished with a low-friction Nikasil plated bore for unmatched heat dissipation, oil retention, and maximum longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTrue Direct Bolt-On:\u003c\/b\u003e Drops right onto your factory bottom end. Zero crazy case modifications, machining, or bike alterations are required. Bolt it down and ride.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUniversal Compatibility:\u003c\/b\u003e Build it your way. This unit is 100% compatible with all original (OEM) and aftermarket reeds, pipe flanges, cylinder heads, pistons, and top-end gaskets.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eFitment\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1989–2001 Honda CR500\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eBore Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStock Bore\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMaterial\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAll-Aluminum Cast\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eBore Coating\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNikasil Plated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003ePorting Style\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOptimized Factory-Plus\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eExhaust Layout\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eImproved Single Bridged\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eThermal Management\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUpgraded Exhaust Duct Cooling\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eModifications Required\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNone (Direct Bolt-On)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCompatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAccepts all OEM \u0026amp; Aftermarket Top-End Components\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBring your CR500 into the modern era.\u003c\/b\u003e Add to cart to experience the ultimate upgrade for your 500 top end.\u003c\/p\u003e","brand":"🏁Two-Strokes Only🏁","offers":[{"title":"Default Title","offer_id":54611137986839,"sku":null,"price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0687\/3818\/7543\/files\/2026-08-05_14h54_33_15ff2d0e-e400-496c-86bf-4bd818ceecc8.png?v=1785967074","url":"https:\/\/twostrokesonly.com\/products\/1989-2001-honda-cr500-direct-bolt-on-performance-cylinder","provider":"🏁Two-Strokes Only🏁","version":"1.0","type":"link"}