{"product_id":"hkm-9628499-750w-fat-tire-electric-dirt-bike-48v-18ah-864wh-20x4-0-dual-crown-coil-fork","title":"HKM-9628499 Fat Tire Electric Dirt Bike Runs a 750W Hub on an 864Wh Pack for 30 Miles With a Dual Crown Coil Fork","description":"\u003cdiv class=\"hkm-pdp\"\u003e\n\n\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@400;500;700\u0026display=swap');\n.hkm-pdp{\n  --hkm-ink:#0e0e0e; --hkm-body:#636363; --hkm-muted:#6e6e6e; --hkm-line:#e1e1e1;\n  --hkm-panel:#f0f0f0; --hkm-blue:#0672cb; --hkm-link:#00468b;\n  max-width:1292px; width:100%; min-width:0; margin:0 auto; padding:0 2px;\n  font-family:\"Roboto\",\"Helvetica Neue\",Helvetica,Arial,sans-serif;\n  font-size:16px; line-height:1.7; color:var(--hkm-body); font-weight:400;\n  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-wrap:break-word;\n}\n.hkm-pdp *{box-sizing:border-box}\n.hkm-pdp .hkm-eyebrow{\n  font-size:11px; font-weight:400; letter-spacing:.08em; 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width:auto!important; padding:2px 0; border:0; background:transparent}\n  .hkm-pdp .hkm-cmp td.hkm-cmp-row{font-weight:500; color:var(--hkm-ink); font-size:13.5px; margin-bottom:7px}\n  .hkm-pdp .hkm-cmp td[data-label]::before{content:attr(data-label) \" · \"; color:var(--hkm-muted); font-size:12px}\n}\n@media (min-width:768px) and (max-width:1023px){\n  .hkm-pdp{font-size:14.5px}\n  .hkm-pdp h2{font-size:21px}\n  .hkm-pdp h2:first-of-type{font-size:25px}\n}\n\n\u003c\/style\u003e\n\n\u003cp class=\"hkm-eyebrow\"\u003e750W · 864Wh · 16-30 mi · 20 in\u003cspan class=\"hkm-eb-wt\"\u003e · dual crown fork · 330 lb load · Shimano 7\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003e\n\u003cspan class=\"hkm-t-d\"\u003eDual Crown Coil Fork Coil Rear Shock And A Lockable Battery Case\u003c\/span\u003e\u003cspan class=\"hkm-t-m\"\u003eLow Slung Miles On Wide Fat Tires\u003c\/span\u003e\n\u003c\/h2\u003e\n\n\u003cp class=\"hkm-lead\"\u003eA fat tire electric dirt bike in a low-slung moto frame, a 750W brushless geared hub in the rear wheel, and a 48V 18Ah pack worth 864Wh in a key-locked case on the down tube. A dual crown coil fork and a coil-over shock, mechanical disc brakes at both wheels and 20 x 4.0 tires. Listed at 16 to 30 miles per charge, a 20 mph throttle setting, and a 330 lb load rating, with brown or orange saddles and a passenger pad.\u003c\/p\u003e\n\n\u003cp\u003eThe format is a small electric dirt bike rather than a bicycle: a welded carbon steel low-slung frame, a long saddle with a second pad behind it, and the battery case sitting in the down tube where the mass stays low. The pack locks with a key and lifts out for charging at a desk or on a workbench. It suits fire roads, field tracks, sand and snow, and the paved last mile of a commute where the hard surface runs out.\u003c\/p\u003e\n\n\u003cp\u003eThe trade is honesty about rules. A 750W throttle bike is not a street motorcycle and in many states it sits outside the Class 1 to 3 e-bike definitions, so it belongs on private land and trails where the law allows. The throttle setting is 20 mph as configured, the pedals and the seven gears are real, and a helmet is not optional at any speed.\u003c\/p\u003e\n\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\n\u003cul class=\"hkm-glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e750W Hub Motor\u003c\/strong\u003e — Brushless geared rear hub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e864Wh Pack\u003c\/strong\u003e — 48V 18Ah, key-locked and removable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 to 30 Miles\u003c\/strong\u003e — Throttle to pedal assist per charge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 mph Throttle\u003c\/strong\u003e — As configured for US riding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Crown Fork\u003c\/strong\u003e — Coil fork with exposed springs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil-Over Shock\u003c\/strong\u003e — One spring under the saddle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Discs\u003c\/strong\u003e — Front and rear with rotors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 x 4.0 Fat Tires\u003c\/strong\u003e — Three-layer casings for loose ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShimano 7 Speed\u003c\/strong\u003e — Thumb shifter on the bars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Display\u003c\/strong\u003e — Speed, battery and assist level\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e33.9 kg Net\u003c\/strong\u003e — 330 lb load rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Saddles\u003c\/strong\u003e — Brown or orange as listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eA Low Slung Frame With Pedals\u003c\/h2\u003e\n\n\u003cp\u003eThe frame is welded carbon steel in a low-slung moto layout, with a long saddle and a second pad behind it. Steel is heavier than aluminium and it is also what keeps a frame like this affordable and repairable, and the welds want an inspection after a hard season.\u003c\/p\u003e\n\n\u003cp\u003eThe motor is a 750W brushless geared hub in the rear wheel, with the controller inside the frame instead of a box under the seat. A geared hub trades a little top-end for pull from a stop, which is what a loaded bike on a steep track actually needs.\u003c\/p\u003e\n\n\u003cp\u003eBehind it sits a seven-speed Shimano drivetrain with a thumb shifter, so the pedals are a real fallback when the pack runs flat and a way to keep the motor in its efficient band on climbs. The bike pedals like a heavy bicycle, which is exactly what it is.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eWelded carbon steel low-slung frame\u003c\/li\u003e\n\u003cli\u003e750W brushless geared hub\u003c\/li\u003e\n\u003cli\u003eFive assist levels and a walk mode\u003c\/li\u003e\n\u003cli\u003e7-speed Shimano thumb shifter\u003c\/li\u003e\n\u003cli\u003eTwist throttle on the bars\u003c\/li\u003e\n\u003cli\u003eLCD with speed, battery and assist\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOn throttle alone the bike pulls to about 20 mph and holds it on flat ground, the setting it ships with. The saddle is long with a passenger pad, and the LCD on the bars keeps speed, battery state and assist level in one place.\u003c\/p\u003e\n\n\u003ch2\u003eWhere the Miles Come From\u003c\/h2\u003e\n\n\u003cp\u003eThe pack is 48V 18Ah, worth 864Wh, and it sits in a key-locked case in the down tube rather than bolted outside it. It lifts out for charging at a desk or in an apartment, which matters when the bike lives in a garage without power. A management system balances the cells and guards against overdraw and over-discharge, and the supplied 48V charger fills it from empty in about five to six hours.\u003c\/p\u003e\n\n\u003cp\u003eWe quote 16 to 30 miles per charge, the span the maker lists: the low end on throttle alone and the high end with pedal assist on level ground. Hills, cold weather, soft sand and a heavy load all cut into it, so treat 30 as the ceiling and plan around the rides you actually take, not the brochure. Charge soon after a ride rather than parking it warm and empty overnight.\u003c\/p\u003e\n\n\u003cp\u003eRiding style decides the rest. Five assist levels let you trade effort for miles, a walk mode helps you push the bike up a slope, and tire pressure matters more than most riders expect: the fat casings want around 20 psi on pavement and 8 to 10 psi when sand or snow is on the menu.\u003c\/p\u003e\n\n\n\n\u003ch2\u003eFire Roads Sand and Snow\u003c\/h2\u003e\n\n\u003cp\u003eUp front a dual crown coil fork shows its springs in the open, and under the saddle a coil-over shock keeps the back wheel tracking instead of skipping. Together they keep the wheels planted on washboard and rocky track, and mechanical discs at both ends park it predictably once bedded in.\u003c\/p\u003e\n\n\u003cp\u003eThe 20 x 4.0 three-layer casings are the other half of the story: wide enough to float over soft sand and snow at low pressure, and hard enough to roll cleanly when the commute is mostly pavement.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eField tracks and fire roads\u003c\/li\u003e\n\u003cli\u003eSandy lots and snow days\u003c\/li\u003e\n\u003cli\u003eShort two-up runs on the passenger pad\u003c\/li\u003e\n\u003cli\u003eDusk riding with the round headlight\u003c\/li\u003e\n\u003cli\u003eNot for stairs or a roof rack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003cdiv class=\"hkm-tablewrap\"\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBike\u003c\/td\u003e\n\u003ctd\u003eHKM-9628499 e-dirt bike, 85 percent assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e48V 18Ah 864Wh pack with BMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharger\u003c\/td\u003e\n\u003ctd\u003e48V charger with US plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eToolkit\u003c\/td\u003e\n\u003ctd\u003eAssembly tools for the first fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Keys\u003c\/td\u003e\n\u003ctd\u003eKey set for the pack lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Manual\u003c\/td\u003e\n\u003ctd\u003eSetup, safety and care instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003c\/div\u003e\n\n\u003cp class=\"hkm-note\"\u003eThe bike arrives 85 percent assembled: fit the handlebar, the front wheel and the pedals with the supplied toolkit, then charge the pack fully before the first ride. Check both brake rotors for true, set the bars square to the fork, and recheck the axle nuts after the first ten miles.\u003c\/p\u003e\n\n\u003ch2\u003eColor and Finish\u003c\/h2\u003e\n\n\u003cp\u003eOne frame, two saddles: brown saddle on black rims or orange saddle on silver alloy rims, with a matte black frame, black fork legs and knobby tires under both. The saddles are synthetic leather over foam with a wipe-clean surface, and the round headlight carries a guard over its lens.\u003c\/p\u003e\n\n\u003cp\u003eThe wear points are the fork stanchions and the chainstay, which want a wipe after wet and muddy rides, and the saddle corners where a strap rubs.\u003c\/p\u003e\n\n\u003ch2\u003eBattery Care and Maintenance\u003c\/h2\u003e\n\n\u003cp\u003eCharge the pack indoors between 10 and 30 degrees C, and never charge a frozen pack: plating a cold cell costs capacity permanently, so let it warm first. Give it one full charge before the first ride, unplug when the light turns green, and store it around 60 percent charge if the bike will sit for a month.\u003c\/p\u003e\n\n\u003cp\u003eEach ride starts with a tire pressure check against the terrain and a squeeze of both brake levers. Mechanical pads want a look every 200 miles, since a worn pad scores the rotor, and the chain wants a wipe and a drop of lube after wet rides. Check the spoke tension after the first few outings, keep the axle nuts tight, and never aim a pressure washer at the connectors or the charge port.\u003c\/p\u003e\n\n\n\n\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003cdiv class=\"hkm-tablewrap\"\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHKM-9628499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFat tire electric dirt bike, 20 in, low-slung moto frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003e750W brushless geared rear hub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e48V 18Ah lithium, 864Wh, removable and key-locked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e16 to 30 mi, throttle to pedal assist\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop speed\u003c\/td\u003e\n\u003ctd\u003e20 mph (32 km\/h) on throttle as configured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge time\u003c\/td\u003e\n\u003ctd\u003e5 to 6 hours from empty, 48V charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrakes\u003c\/td\u003e\n\u003ctd\u003eMechanical disc, front and rear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront fork\u003c\/td\u003e\n\u003ctd\u003eDual crown coil fork, exposed springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear suspension\u003c\/td\u003e\n\u003ctd\u003eCoil-over shock under the saddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrivetrain\u003c\/td\u003e\n\u003ctd\u003eShimano 7-speed derailleur, thumb shifter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTires\u003c\/td\u003e\n\u003ctd\u003e20 x 4.0 knobby fat, three-layer casing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD, speed, battery and assist level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRide modes\u003c\/td\u003e\n\u003ctd\u003eFive assist levels, throttle and walk mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame\u003c\/td\u003e\n\u003ctd\u003eWelded carbon steel, low-slung\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e33.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad capacity\u003c\/td\u003e\n\u003ctd\u003e330 lb (150 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColors\u003c\/td\u003e\n\u003ctd\u003eBrown Saddle, Orange Saddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003e85 percent assembled on arrival\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eHow far does it go on a charge?\u003c\/h3\u003e\n\u003cp\u003eWe quote 16 to 30 miles per charge, the span the maker lists: the low end on throttle alone and the high end with pedal assist on level ground. Hills, cold weather and a heavy load all pull it down. Charging from empty takes about five to six hours with the supplied charger.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eHow fast does it go?\u003c\/h3\u003e\n\u003cp\u003eThe throttle is set to 20 mph as configured, and it holds that speed on flat ground. Hardware in other markets is listed faster, but this unit ships set up for US riding. It is not a street motorcycle, so ride where the law allows and wear a helmet every time out.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eHow powerful is the motor?\u003c\/h3\u003e\n\u003cp\u003eThe factory figure is 750W from a brushless geared hub in the rear wheel. The geared design is chosen for pull from a stop rather than top speed, so steep tracks and soft ground are where it feels strongest. Five assist levels let you decide how much of that reach you want.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eIs the battery removable?\u003c\/h3\u003e\n\u003cp\u003eYes. The 48V 18Ah pack worth 864Wh sits in a key-locked case in the down tube and lifts out with the key, so it charges at a desk or in an apartment away from the bike. A management system balances the cells and guards against overdraw and over-discharge.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eWhat does the suspension include?\u003c\/h3\u003e\n\u003cp\u003eA dual crown coil fork up front, its springs open to view, and a coil-over shock under the saddle, so both ends move instead of passing every bump through. Together with the 20 x 4.0 fat casings they keep the wheels planted on gravel, sand and broken pavement.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hkm-q\"\u003e\n\u003ch3\u003eWhat does assembly involve?\u003c\/h3\u003e\n\u003cp\u003eIt arrives 85 percent assembled. Fit the handlebar, the front wheel and the pedals with the supplied toolkit, set the bars square to the fork, then charge the pack fully and check both rotors for true before the first ride. Recheck the axle nuts after the first ten miles.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eService and Policies\u003c\/h2\u003e\n\n\u003cp\u003eCoverage that lasts beyond the box. Orders ship free with a tracking number in 2 to 5 business days. From delivery, the product is protected for 180 days against manufacturing defects and transit damage, returnable within 30 days for a full refund, and covered by a 24-month parts-and-labor warranty on manufacturing defects. Four policies, one idea: ship it free, protect it for 180 days, take it back for 30, and stand behind it for two years.\u003c\/p\u003e\n\n\u003cdiv class=\"hkm-policy-grid\"\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003eFree Shipping on All Orders\u003c\/h3\u003e\n\u003cp\u003eEvery order ships free. Handling Time: 0-1 business days (Monday to Friday). Transit Time: 2-5 business days (Monday to Friday). A tracking number is emailed as soon as the parcel leaves our warehouse.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e180 Days Purchase Protection\u003c\/h3\u003e\n\u003cp\u003eYour purchase is protected for 180 days from the delivery date against manufacturing defects and damage in transit. If something arrives wrong, we make it right.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e30 Days Money-Back Guarantee\u003c\/h3\u003e\n\u003cp\u003eNot completely satisfied? Request a return within 30 days of delivery for a full refund. We keep the process simple and hassle-free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e24 Months Warranty Service\u003c\/h3\u003e\n\u003cp\u003eThe product is covered by a 24-month warranty from the delivery date against manufacturing defects. Coverage includes parts and labor; normal-wear items are excluded.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"hkm-close\"\u003eHKM-9628499 · fat tire electric dirt bike · low-slung frame in welded carbon steel · 750W from a brushless geared rear hub · removable key-locked 48V 18Ah pack worth 864Wh · 16 to 30 miles per charge, throttle to pedal assist · 20 mph throttle setting as configured · five to six hour charge · dual crown coil fork and a coil-over shock · mechanical disc brakes front and rear · 20 x 4.0 three-layer fat tires · Shimano seven-speed thumb shifter · LCD with speed, battery state and assist level · five assist levels and a walk mode · long saddle with a passenger pad · 33.9 kg net weight · 330 lb load rating · brown or orange saddle · fire roads, field tracks, sand, snow and the paved last mile\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"HKM-9628499 Fat Tire Electric Dirt Bike Runs a 750W Hub on an 864Wh Pack for 30 Miles With a Dual Crown Coil Fork\", \"sku\": \"HKM-9628499\", \"mpn\": \"Hekomart-HKM-9628499\", \"brand\": {\"@type\": \"Brand\", \"name\": \"Hekomart\"}, \"description\": \"A fat tire electric dirt bike in a low-slung moto frame, a 750W brushless geared hub in the rear wheel, and a 48V 18Ah pack worth 864Wh in a key-locked case on the down tube. 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