{"product_id":"set-of-4-sunf-21x7-10-20x11-9-atv-utv-knobby-sport-tires","title":"Set of 4 SunF 21x7-10 Front \u0026 20x11-9 Rear ATV UTV Knobby Tires","description":"\u003cp\u003eOur review of the Set of 4 SunF A027 tires finds them best for recreational riders and budget-conscious racers who need aggressive traction across varied terrain. The single biggest reason to consider this set is the directional X angled knobby tread that delivers strong bite and predictable handling on trails, loose gravel and desert runs, while the heavy 6 PR construction adds puncture resistance for rough conditions. This review focuses on real-world fit, tread performance and build quality for quads, UTVs and other small off-road machines.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirectional X knobby tread:\u003c\/strong\u003e Angled knobs provide enhanced traction when turning and improved grip on loose surfaces for confident cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 ply rated construction:\u003c\/strong\u003e A heavier carcass resists punctures and abrasions when running over rocks, roots and rough trail obstacles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferent front and rear sizes:\u003c\/strong\u003e The set pairs 21x7-10 front with 20x11-9 rear to maintain recommended fitment and handling balance for many ATVs and UTVs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive shoulder knobs:\u003c\/strong\u003e Large shoulder lugs deliver side bite for better control when climbing or carving ruts while protecting the sidewall and rim area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless design:\u003c\/strong\u003e Tubeless construction simplifies mounting and reduces the chances of pinch flats when used with correct rims and pressures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard compound rubber:\u003c\/strong\u003e A firmer compound is used to withstand harsher racing conditions and extend tread life in abrasive terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tire set is aimed at ATV and UTV owners who ride cross country, desert tracks or mixed trail systems and want an aggressive knobby that performs like higher-priced options without a premium cost. It is also a practical upgrade for go karts, utility vehicles and lawn equipment that use matching wheel diameters and seek improved traction and durability.\u003c\/p\u003e\n\u003cp\u003eRiders who need a softer, more forgiving tire for tight technical woods riding or who require a very specific manufacturer warranty or DOT on-road certification should look elsewhere; the SunF A027 is engineered for off-road bite and durability rather than pavement comfort or road-legal touring.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent traction on loose gravel and trails thanks to the angled X tread pattern and deep lugs.\u003c\/li\u003e\n\u003cli\u003eDurable 6 ply construction reduces susceptibility to punctures in rough terrain.\u003c\/li\u003e\n\u003cli\u003ePositive owner feedback on value, appearance and ease of installation on common quads.\u003c\/li\u003e\n\u003cli\u003eA balanced front\/rear sizing that preserves handling and fit for many popular wheel diameters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHard compound may wear faster on frequent hardpack pavement use and is optimized for off-road racing, not road comfort.\u003c\/li\u003e\n\u003cli\u003eThe package does not include rims, so confirm rim diameter compatibility before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Number of Tires\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Size\u003c\/td\u003e\n\u003ctd\u003e21x7-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Size\u003c\/td\u003e\n\u003ctd\u003e20x11-9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePly Rating\u003c\/td\u003e\n\u003ctd\u003e6 PR (front and rear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Tread Depth\u003c\/td\u003e\n\u003ctd\u003e14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Tread Depth\u003c\/td\u003e\n\u003ctd\u003e15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PSI\u003c\/td\u003e\n\u003ctd\u003e7 PSI (front and rear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SunF A027 set offers a compelling mix of aggressive tread, durable 6 ply construction and accurate front\/rear sizing that makes it a smart, value-oriented choice for trail riders and desert racers. For those who need solid traction, puncture resistance and an easy replacement package for quads or UTVs, this set represents good value compared with premium racing tires.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre rims included?\u003c\/strong\u003e\u003cbr\u003eNo, rims are not included; this set contains four tubeless tires only, so verify your rim sizes before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these be used on a go kart or lawn mower?\u003c\/strong\u003e\u003cbr\u003eYes, they are suitable for a range of small off-road vehicles including quads, UTVs, go karts and certain lawn tractors if the tire sizes match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is installation and mounting?\u003c\/strong\u003e\u003cbr\u003eCustomers report the tires are easy to install and mount, but proper seating and correct PSI are important for tubeless operation.\u003c\/p\u003e","brand":"SUNF","offers":[{"title":"Default Title","offer_id":48148778090715,"sku":"B01M0AGBN9","price":212.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81xf_9RTGlL._AC_SL1500_cb1ec8a8-a65f-4482-90dc-fbad19b671f5.jpg?v=1768799688","url":"https:\/\/gearmusthave.com\/products\/set-of-4-sunf-21x7-10-20x11-9-atv-utv-knobby-sport-tires","provider":"GearMustHave","version":"1.0","type":"link"}