{"product_id":"douglas-qma-wheel-dw850x6bqma-black-4-0-4-5","title":"Douglas Black Anodized QMA Wheel 4.0+4.5 Offset","description":"\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DW850x6BQMA\u003cbr\u003e\u003cstrong\u003eCategory:\u003c\/strong\u003e Quarter Midget (QMA) kart racing wheel\u003cbr\u003e\u003cstrong\u003eOffset:\u003c\/strong\u003e 4.0+4.5 (listed equivalently as 4.0+450 \/ 4.50)\u003cbr\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e black anodized aluminum\u003cbr\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e matching pair or set so track width and tire placement stay consistent\u003c\/p\u003e\u003cp\u003eA kart wheel is the metal rim the tire mounts on. Offset is how far that rim sits in or out from the hub, which changes how wide the go-kart sits on the track. This Douglas Wheels QMA wheel is a black anodized aluminum rim built for quarter midget karting, not a sprint kart, dirt kart, or shifter kart hoop. Racers typically run a matching pair so chassis setup, tire placement, and \u003ca href=\"\/products\/cfws1434-carbon-fiber-wheel-spacer-1-4-wide-x-3-4-id-cfws1434\"\u003emeasured track width\u003c\/a\u003e stay even left to right.\u003c\/p\u003e\u003cp\u003eThe source listing does not state bolt circle, bead diameter, or a numeric width beyond the model code. Confirm hub pattern, bead, and the 4.0+4.5 offset against your chassis and tire package before you order. Do not assume fitment from a photo alone.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill this QMA wheel fit my quarter midget hub?\u003c\/strong\u003e It is sold as a Douglas QMA (Quarter Midget) kart racing wheel. Verify hub pattern, bead, and 4.0+4.5 offset against your chassis and tire package; those dimensions are not listed beyond the model code.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs this compatible with sprint kart or LO206 4-cycle kart wheels?\u003c\/strong\u003e No. This listing is a QMA wheel for quarter midget karting. Sprint kart, dirt kart, shifter kart, and typical LO206 4-cycle kart rims use different bead and hub standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow should I install a matching pair for track width?\u003c\/strong\u003e Mount the tire on the rim, seat the bead, and torque hub hardware to your chassis spec. Run a matching pair (or set) so offset and tire placement stay consistent across the go-kart.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat warranty or finish care should I expect on the black anodized aluminum?\u003c\/strong\u003e Follow Douglas Wheels and your retailer policy after delivery. Keep the black anodized finish clean, inspect the center bore and bolt holes after kart racing weekends, and replace a bent rim rather than running it.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cdiv class=\"related-products\"\u003e\n\u003cp\u003e\u003cstrong\u003eRelated Products\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/130x5-vented-mag-wheels-pair-mb5-130vx2\"\u003e130x5 Vented Magnesium Wheels Pair for Superior Kart Traction and Cooling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/132x5-low-volume-mag-wheels-pair-mb5-132lv2\"\u003e132x5 Low Volume Magnesium Wheels Pair for Efficient Kart Cooling and Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/210x5-vented-mag-wheels-pair-mb5-210vx2\"\u003eDouglas Wheels M-Series Vented Magnesium Wheel Pair - 210mm x 5\" - CIK\/FIA Approved\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/valve-stem-short-vs\"\u003eShort Valve Stem for Kart Wheels\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8mm-copper-cik-wheel-nut-10mm-od-hex-8mmcikwn\"\u003e8mm Copper CIK Homologated Wheel Nut with 10mm Hex\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin:28px 0;\"\u003e\n  \u003cp style=\"font-weight:700;margin:0 0 12px 0;font-size:1.02em;\"\u003e🏁 Product Highlights\u003c\/p\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(2,1fr);gap:8px;\"\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eThis Douglas rim is the metal wheel the tire mounts on for quarter midget (QMA) kart racing.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eModel code is DW850x6BQMA as listed by Douglas Wheels.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eOffset is 4.0+4.5, also written 4.0+450, meaning a 4.50 offset on one side of the pairing.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eFinish is black anodized aluminum on the bell-shaped outer face.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eOffset sets how far the rim sits in or out from the hub and changes how wide the kart sits.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eBuilt for QMA use; confirm hub pattern, bead, and offset against your chassis and tires before ordering.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eRun a matching pair or set so track width and tire placement stay consistent with the chassis setup.\u003c\/div\u003e\n\u003cdiv style=\"padding:10px 14px;border:1px solid #d8e8f2;border-radius:6px;background:#f8fbfd;font-size:0.91em;line-height:1.45;\"\u003eCenter bore and surrounding bolt holes are visible on the outer face for hub mounting.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DWT","offers":[{"title":"Default Title","offer_id":54423559274814,"sku":"DW850X6BQMA","price":55.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/dw850x6bqma-4-0-plus-4-5-qma-wheel-black.jpg?v=1788945488","url":"https:\/\/swiftkarting.com\/products\/douglas-qma-wheel-dw850x6bqma-black-4-0-4-5","provider":"Swift Karting","version":"1.0","type":"link"}