{"title":"ATV \u0026 UTV Top End Kits","description":"\u003cdiv class=\"category-top-desc\"\u003e\n\u003cp\u003eTop end rebuild \u0026amp; big bore kits for Honda TRX400 \u0026amp; XR400\u003c\/p\u003e\n\u003cp\u003ePiston, rings \u0026amp; gasket kits for stock bore rebuilds and displacement upgrades\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"honda-xr400-trx400-top-end-cylinder-kit","title":"Honda XR400 TRX400 Top End Cylinder Kit Stock Bore","description":"\u003cdiv class=\"prod-desc\"\u003e\n\u003ch2\u003eHonda XR400 and TRX400 Top End Cylinder Kit – Stock Bore Performance\u003c\/h2\u003e\n\u003cp\u003eRestore power and reliability with this complete 50 Caliber Racing top end cylinder kit designed for Honda XR400 and TRX400EX models. Built to OEM specifications, this stock bore kit provides proper fitment, dependable performance, and long service life. It is an ideal solution for riders looking to rebuild worn engines and bring back factory performance.\u003c\/p\u003e\n\u003cp\u003eThis kit includes all major components needed to complete a top end rebuild, helping reduce downtime and eliminate the need to source parts separately. The included moly coated piston helps reduce friction and heat while supporting durability and smooth engine operation. Designed for straightforward installation, this kit allows you to complete your rebuild with confidence.\u003c\/p\u003e\n\u003cp\u003eWhether you are maintaining your trail machine or restoring performance, this complete top end kit is engineered for consistent reliability and long-term use.\u003c\/p\u003e\n\u003ch2\u003eKit Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder jug\u003c\/li\u003e\n\u003cli\u003eMoly coated piston – 85mm, 10:1 compression\u003c\/li\u003e\n\u003cli\u003ePiston ring set\u003c\/li\u003e\n\u003cli\u003eCirclips\u003c\/li\u003e\n\u003cli\u003eWrist pin\u003c\/li\u003e\n\u003cli\u003eSpark plug\u003c\/li\u003e\n\u003cli\u003eComplete gasket set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFits the Following Honda Models\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eXR400R (1996–2004)\u003c\/li\u003e\n\u003cli\u003eTRX400EX (1999–2009)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for durability and ease of installation, this top end rebuild kit helps extend engine life and restore dependable performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"50 Caliber Racing","offers":[{"title":"Default Title","offer_id":49236796899585,"sku":"4449A6","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/8256\/3329\/files\/6920.jpg?v=1780790339"},{"product_id":"honda-trx400-xr400-440cc-big-bore-kit","title":"Honda TRX400 XR400 440cc Big Bore Kit","description":"\u003cp\u003e\u003cstrong\u003e50 Caliber Racing Honda XR400 \/ TRX400EX 89mm 440cc Big Bore Kit (1996-2016)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e Bolt on 89mm 440cc big bore kit for all Honda TRX400EX and XR400 models. This is a complete kit, with everything you need. Improved cylinder design with a larger cylinder sleeve for longer lasting performance. 10:1 89mm Piston with hard anodized dome. This kit is truly bolt on and can be installed by anyone with basic mechanical skills who is not afraid to turn some nuts and bolts. Breathe new life into your Honda with our high quality, affordable and reliable big bore kit!\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003cbr\u003e - 89mm Cylinder\u003cbr\u003e - 10:1 Piston with Anodized Dome\u003cbr\u003e - Piston Ring Kit\u003cbr\u003e - Gasket Kit\u003cbr\u003e - Wrist Pin\u003cbr\u003e - Circlips\u003cbr\u003e - O-Rings\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFits the following Honda models:\u003c\/strong\u003e\u003cbr\u003e - TRX400EX (1996-2016)\u003cbr\u003e - TRX400X (1996-2016)\u003cbr\u003e - XR400 (1996-2003)\u003c\/p\u003e","brand":"50 Caliber Racing","offers":[{"title":"Default Title","offer_id":49236953661697,"sku":"4449A13","price":129.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/8256\/3329\/files\/6923.jpg?v=1780801424"}],"url":"https:\/\/utvdude.com\/collections\/atv-utv-top-end-kits.oembed","provider":"UTV Dude","version":"1.0","type":"link"}