Linhai Bighorn 550L 4×4 ATV





Meet the Linhai Big Horn 550L 4×4 full size ATV!

The Linhai 550L has an Independent Rear Suspension, heavy duty front and rear steel racks, and an extended 2 person comfortable seat! These high quality 4×4 unit is built to the highest standards and are powerful, dependable ATVs loaded with features including a 493cc four stroke, water-cooled EFI engine; CVT transmission; McPherson Struts/Double A-Arm Suspension; 4 Wheel Hydraulic Disc Brakes; 4×4 with shaft drive; 2-Speed Transfer Case with High/Low and Reverse; OHC, TCI; High Torque Electric Starter; Digital LED Speedometer; High Intensity Headlamps and Accent LED Lighting; 2 up seat; Alloy Wheels; Front and Rear Steel Rack; Front winch mounting plate with optional winch available. All these features plus a 1-year limited parts and labor warranty! Get big name quality with more standard features without paying a big name price. Linhai is a leader in the manufacturing of affordable, high quality motorsport products such as the Big Horn line of ATVs and UTVs which were introduced in the USA over 15 years ago. Linhai is a manufacturing powerhouse with 60 years of expertise and experience. In 1993 Linhai entered into a joint venture and created the Linhai-Yamaha group to produce multipurpose engines. Since then they have exploded in popularity in the US and all over the world.

Local Pickup and Local Delivery orders are Fully Assembled and Ready 2 Ride! Shipping to the some coastal and remote states may have a shipping surcharge noted prior to checkout.

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Bighorn 550L 4×4 ATV


  • liquid cooled engine
  • CVT Transmission
  • 2-Speed Transfer Case with High/Low and Reverse
  • Extended length to accommodate 2 persons comfortably
  • Rear seat backrest
  • 4×4 with shaft drive
  • 4 Wheel Hydraulic Discs
  • McPherson Strut / Double A-Arm Fully Independent
  • Heavy Duty Steel front and rear racks
  • High Capacity front mounted winch

Available colors (subject to availability):

  • RED
  • VISTA CAMO – add $150.


The pictures provided on this website are only a representation of the actual ATV being sold. On occasion the factory may without notice make minor upgrades to the ATV that are not represented in the pictures provided. H&R Enterprise will make every attempt to keep all of it’s pictures, specifications, and color changes as up to date as possible. At no point will H&R Enterprise be held liable for factory authorized changes in design, specification, or color variations.

Having difficulty paying? Don’t want your Credit card on the WEB! We gladly except all major Credit/Debit card payments over the phone.

Call (877) 937-2666 To speak with someone on our sales team.

Vehicle Size: Length×Width X Height 90×46×50in
Wheelbase 58 in
Weight 805 lbs
Fuel Capacity 3.83 gallons
Ground Clearance 9.9 in
Specification of Tire Front: AT25×8-12
Rear: AT25×10-12
Brake system control model Front: Hand Brake / Foot Brake
Rear: Hand Brake / Foot Brake
Brake system Model Front: Disc
Rear: Disc
Suspension type McPherson independent suspension
Twin-A arm independent suspension
Engine Model No. LH188MR-A
Type Single Cylinder, 4 Stroke, Water cooling
Bore & stroke 3.4×3.2 in
Displacement 493 cc
Max power 16.4kw/6000r/min
Max torque 30N.m/4500 r/min
Compression Ratio 10.2:1
Ignition type E.F.I.
Start type Electric Starter


If you chose “FREE SHIPPING” your unit will require some assembly. Here is a quick rundown of what you can expect to assemble when you get your unit! All engines/gear cases are filled with shipping oil that needs checked prior to starting and changed after approx. 4-8 hours of service!

 Dirt Bikes / Pit Bikes – Typical installation include mounting up the handlebars, installing the rear shock, mounting up the front tire, and a possible other small item or two.

ATVS / 4 Wheelers – Typical installation include mounting all 4 tires, mounting up the handlebars, tie rod ends onto the spindle in the front, shock top bolts, install battery. Sometimes you will have to install some small things like the racks, gas cap, etc. VERY EASY ASSEMBLY!

Scooters / Mopeds – Depending on what unit you get, here are some things you might have to mount on the scooter, Battery, Mirrors, Rear Storage Box, Windshield, Front Tire. Typically all scooters come fully assembled and you only have to put on a couple small things to make it complete.

UTV’S – Typical installation includes installing 4 upper shock bolts, mount wheels, install upper portion of the roll cage, install exhaust muffler with 2 bolts and 4 springs, install bed frame and mount plastics, install battery underneath drivers side seat and connect winch powers to the battery as well. Red wire is positive, Black wire is negative, install seats, mount steering wheel, install front hood plastic and bumper and bumper cover. You will need to change the shipping oil, differential fluids front and rear, flush and change radiator coolant. It is very important to check all bolts and nuts to ensure that they are tight on the whole machine.

returns-refundsParts – Parts purchased from us may be returned within (14) days of purchase. We require that the product is in original packaged NEW condition. Customer is responsible for shipping costs to send it back. Original shipping is not refunded and there is a 20% restocking fee for all parts returns, unless defective.

Crated Units – Crated Units purchased from us may be returned within (14) days of delivery, with reasonable cause, as long as the unit is in original packaged NEW condition. Customer is responsible for shipping costs & insurance to send unit back.  A 20% restocking fee is applicable. All units are inspected and verified damage free prior to being shipped. Any shipping damage that may occur during shipment is to be noted by purchaser at time of delivery and noted on shippers delivery papers. Certain severe damages may be cause for rejection of shipment with notice given to all parties before shipper leaves premises.  Purchaser and shipper are responsible to settle claim, along with any dealer assistance required along with monetary requirement(s) needed for dealer parts, etc. to be repaired or replaced.

Assembled Units – Assembled Units may NOT be returned, except for service, once the shipper has picked up the unit or customer has taken local delivery of the unit.


REMEMBER – Safety 1st

Ride Safe, Ride Smart

There’s only one thing better than getting ready to ride your ATV, UTV, Dirt Bike, or Scooter – and that’s learning how to do it safely. We want to help you to make the right decisions about your riding. We want to help you choose the right unit for your skill level, assist you in making the right judgments when riding and determine the proper helmet and equipment that will keep you as safe as possible.

Remember: safety starts with the rider. Read your owner’s manual and safety materials.

Be a Responsible Rider

Riding an ATV, motorcycle, UTV and dirt bike is an exercise in responsibility to yourself, to others, to the environment and to the sport. So remember: wear a helmet, eye protection and protective clothing whenever you ride. Never ride under the influence of drugs or alcohol, inspect your bike before riding & read your owner’s manual. Always obey local laws, use common sense, and respect the rights of others when you ride. Make sure you have a proper license when riding on public roads, and never modify your motorcycle’s exhaust system.

Unit Checklist

FOR YOUTH ATV BEGINNERS – Adjusting the Throttle Control before letting rider ride. When starting the unit up make sure that throttle control is as low as it can be tightened. The throttle control is located on the topside of the throttle on the handlebar. Loosen the nut and then tighten the screw down. Continually do this until you find the right adjustment to it’s safe enough to let your child ride. You’ll need to play with this to find the right speed.

Make sure the emergency brake is on before starting the unit. This is located on the left handlebar. Push the button in and clamp the brake before starting the unit up. To start the bike, the hand brake needs to be in a locked position anyway.

Make sure the rider is prepared to ride when the brake is released.

Tighten all bolts on wheels. Make sure wheels properly rotate.

Tighten all bolts on unit.

Make sure that handlebars, exhaust pipe, frame and other noticeable parts on bike are properly attached and bolted down.


The ATV Safety Institute’s Golden Rules:
  1. Always wear a DOT-compliant helmet, goggles, long sleeves, long pants, over-the-ankle boots, and gloves.
  2. Never ride on paved roads except to cross when done safely and permitted by law – another vehicle could hit you. ATVs are designed to be operated off-highway.
  3. Never ride under the influence of alcohol or drugs.
  4. Never carry a passenger on a single-rider ATV, and no more than one passenger on an ATV specifically designed for two people.
  5. Ride an ATV that’s right for your age.
  6. Supervise riders younger than 16; ATVs are not toys.
  7. Ride only on designated trails and at a safe speed.
  8. Take a hands-on ATV RiderCourseSM and the free online E-Course. Visit or call

T-CLOC Pre-Ride Inspection Checklist

Additional information

Color Selection