{"title":"CAT 303.5DCR","description":"\u003cp\u003eOutfit your \u003cstrong\u003eCAT 303.5DCR\u003c\/strong\u003e mini excavator with heavy-duty replacement rubber tracks built to OEM specs in size \u003cstrong\u003e300x52.5Wx90\u003c\/strong\u003e, backed by a 24-month warranty and free freight to the lower 48.\u003c\/p\u003e\n\u003ch3\u003eCAT 303.5DCR — Track Spec Sheet\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack size:\u003c\/strong\u003e 300x52.5Wx90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 300 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch:\u003c\/strong\u003e 52.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinks:\u003c\/strong\u003e 90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuide:\u003c\/strong\u003e Wide guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTread Patterns\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eDirectional\u003c\/strong\u003e — The excavation specialist — directional tread optimized for digging and slope work.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCAT 303.5DCR Undercarriage Lineup\u003c\/h3\u003e\u003cp\u003ePair your tracks with the right undercarriage parts for the \u003cstrong\u003eCAT 303.5DCR\u003c\/strong\u003e:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cat-303-5dcr-sprocket\"\u003eDrive Sprocket\u003c\/a\u003e — OEM Part #264-5371\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cat-303-5dcr-front-idler\"\u003eFront Idler\u003c\/a\u003e — OEM Part #267-4829\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cat-303-5dcr-carrier-roller\"\u003eTop Roller\u003c\/a\u003e — OEM Part #266-8794\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cat-303-5dcr-track-roller\"\u003eBottom Roller\u003c\/a\u003e — OEM Part #266-8793\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAlso Fits These Machines\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003e300x52.5Wx90\u003c\/strong\u003e track size is shared across these models — same track, verified cross-fit:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/cat-304ecr\"\u003eCAT 304ECR\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/ihi-35uj\"\u003eIHI 35UJ\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/ihi-35v-4\"\u003eIHI 35V-4\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/new-holland-eh35\"\u003eNew Holland EH35\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat You Get with TrackTECH\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on every track — confidence that outlasts the competition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision OEM alignment\u003c\/strong\u003e — a reinforced roller path keeps running smooth and vibration low.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous steel cord\u003c\/strong\u003e — up to 40% stronger than typical aftermarket tracks, resisting stretch and de-tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight to the lower 48\u003c\/strong\u003e — every order ships free, with same-day dispatch on in-stock items.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReady to roll? Buy your CAT 303.5DCR undercarriage online now — or reach a track specialist at \u003ca href=\"tel:8508167898\"\u003e(850) 816-7898\u003c\/a\u003e. Use the \u003ca href=\"\/pages\/track-finder\"\u003eTrack Finder\u003c\/a\u003e to confirm the right build.\u003c\/p\u003e","products":[{"product_id":"cat-303-5dcr-rubber-tracks","title":"CAT 303.5DCR Rubber Tracks | 300x52.5Wx90","description":"\u003cp\u003e\u003cstrong\u003eCAT 303.5DCR Rubber Tracks\u003c\/strong\u003e — OEM grade replacement tracks engineered for contractor-grade performance.\u003c\/p\u003e\u003cp\u003eDirect OEM grade replacement for the CAT 303.5DCR. Track size: \u003cstrong\u003e300x52.5Wx90\u003c\/strong\u003e. Tread pattern: \u003cstrong\u003eDirectional\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Steel Cord\u003c\/strong\u003e — 40% stronger than competitor tracks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Virgin Rubber\u003c\/strong\u003e — anti-chunk, anti-tear compound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-Forged Steel Links\u003c\/strong\u003e — precision OEM alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-Month Warranty\u003c\/strong\u003e — backed by TrackTECH's contractor guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack Size:\u003c\/strong\u003e 300x52.5Wx90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 300 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch:\u003c\/strong\u003e 52.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinks:\u003c\/strong\u003e 90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTread Pattern:\u003c\/strong\u003e Directional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Make:\u003c\/strong\u003e Cat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e 303-5DCR\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe TrackTECH advantage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day shipping\u003c\/strong\u003e on in-stock orders placed before 2 PM CT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight\u003c\/strong\u003e to the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on materials and workmanship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor pricing\u003c\/strong\u003e — bulk and fleet discounts available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment guaranteed\u003c\/strong\u003e — we verify before we ship\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TrackTECH","offers":[{"title":"Directional","offer_id":52362227351864,"sku":"TT-3035DCR-300X525WX90-DR","price":984.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0950\/3493\/3560\/files\/300x52.5Wx90-hero.webp?v=1778781982"},{"product_id":"cat-303-5dcr-sprocket","title":"Cat Drive Sprocket | Part #264-5371","description":"\u003cp\u003e\u003cstrong\u003eCAT 303.5DCR Sprocket\u003c\/strong\u003e — OEM grade replacement part for your CAT 303.5DCR.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat-treated steel construction\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to OEM tolerances\u003c\/li\u003e\n\u003cli\u003eDirect replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e12-month warranty against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe TrackTECH advantage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day shipping\u003c\/strong\u003e on in-stock orders placed before 2 PM CT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight\u003c\/strong\u003e to the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on materials and workmanship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor pricing\u003c\/strong\u003e — bulk and fleet discounts available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment guaranteed\u003c\/strong\u003e — we verify before we ship\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TrackTECH","offers":[{"title":"Default Title","offer_id":52362339778872,"sku":"TT-3035DCR-SP-264-5371","price":326.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0950\/3493\/3560\/files\/sp264-5371-585192_2c210fdb-ae9b-49c4-97f0-36ef711ee642.webp?v=1778634601"},{"product_id":"cat-303-5dcr-track-roller","title":"Cat Bottom Roller | Part #266-8793","description":"\u003cp\u003e\u003cstrong\u003eCAT 303.5DCR Track Roller\u003c\/strong\u003e — OEM grade replacement part for your CAT 303.5DCR.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat-treated steel construction\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to OEM tolerances\u003c\/li\u003e\n\u003cli\u003eDirect replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e12-month warranty against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe TrackTECH advantage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day shipping\u003c\/strong\u003e on in-stock orders placed before 2 PM CT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight\u003c\/strong\u003e to the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on materials and workmanship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor pricing\u003c\/strong\u003e — bulk and fleet discounts available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment guaranteed\u003c\/strong\u003e — we verify before we ship\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TrackTECH","offers":[{"title":"Default Title","offer_id":52362339942712,"sku":"TT-3035DCR-TR-266-8793","price":126.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0950\/3493\/3560\/files\/tr266-8793-585192_c3db7ac5-cbec-4eaa-8b82-1234fa17a876.webp?v=1778634601"},{"product_id":"cat-303-5dcr-carrier-roller","title":"Cat Top Roller | Part #266-8794","description":"\u003cp\u003e\u003cstrong\u003eCAT 303.5DCR Carrier Roller\u003c\/strong\u003e — OEM grade replacement part for your CAT 303.5DCR.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat-treated steel construction\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to OEM tolerances\u003c\/li\u003e\n\u003cli\u003eDirect replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e12-month warranty against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe TrackTECH advantage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day shipping\u003c\/strong\u003e on in-stock orders placed before 2 PM CT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight\u003c\/strong\u003e to the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on materials and workmanship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor pricing\u003c\/strong\u003e — bulk and fleet discounts available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment guaranteed\u003c\/strong\u003e — we verify before we ship\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TrackTECH","offers":[{"title":"Default Title","offer_id":52362340073784,"sku":"TT-3035DCR-CR-266-8794","price":208.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0950\/3493\/3560\/files\/cr266-8794-585192_912633be-2814-4b72-bc4b-e6012d62ac01.webp?v=1778634602"},{"product_id":"cat-303-5dcr-front-idler","title":"Cat Front Idler | Part #267-4829","description":"\u003cp\u003e\u003cstrong\u003eCAT 303.5DCR Front Idler\u003c\/strong\u003e — OEM grade replacement part for your CAT 303.5DCR.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat-treated steel construction\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to OEM tolerances\u003c\/li\u003e\n\u003cli\u003eDirect replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e12-month warranty against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe TrackTECH advantage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-day shipping\u003c\/strong\u003e on in-stock orders placed before 2 PM CT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree freight\u003c\/strong\u003e to the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-month warranty\u003c\/strong\u003e on materials and workmanship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor pricing\u003c\/strong\u003e — bulk and fleet discounts available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment guaranteed\u003c\/strong\u003e — we verify before we ship\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TrackTECH","offers":[{"title":"PN 267-4829","offer_id":52362340172088,"sku":"TT-3035DCR-FI-267-4829","price":570.14,"currency_code":"USD","in_stock":true},{"title":"PN 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