BamX BX400-U4 Sierra
2012ATV

BamX BX400-U4 Sierra

$4,999

Key specifications

Engine
387 cc
Power
19 HP
Torque
25 Nm
Weight
266 kg
Fuel type
petrol
Fuel capacity
3.6 L
Transmission
Automatic
Seat height
34 mm
Front brakes
Double disc
Rear brakes
Single disc

Overview

Introducing the 2012 BamX BX400-U4 Sierra, a formidable contender in the ATV market that combines rugged performance with user-friendly features, all at an attractive price point of $4,999. Designed for off-road enthusiasts and adventurers, the BX400-U4 Sierra stands out with its striking camouflage color options—green and brown—that allow it to blend seamlessly into the wilderness. With a focus on durability and versatility, this ATV is perfect for those looking to tackle challenging terrains or explore the great outdoors with confidence. Under the hood, the BX400-U4 Sierra is powered by a robust 387cc single-cylinder, four-stroke engine that delivers a respectable 19 horsepower at 5,500 RPM and 25 Nm of torque. This combination ensures that riders can easily navigate steep inclines and rugged trails without sacrificing performance. The automatic gearbox and shaft drive system simplify the riding experience, allowing both seasoned riders and novices to enjoy smooth acceleration and effortless handling. The cooling system, utilizing oil and air, works to maintain optimal engine temperatures, ensuring reliability during extended rides. Whether you're cruising through muddy trails or conquering rocky paths, the BX400-U4 Sierra offers a nimble and responsive ride that won’t let you down. Equipped with an array of features designed for comfort and safety, the BX400-U4 Sierra ensures a thrilling yet secure riding experience. The double A-arm front suspension and swing arm rear suspension offer a balanced ride, absorbing shocks from uneven terrain and providing excellent stability. Meanwhile, the double disc front brakes and single disc rear brakes deliver confident stopping power. With a generous ground clearance of 254 mm and an adjustable seat height of 864 mm, this ATV accommodates a wide range of riders, making it approachable for everyone. Plus, the electric starter adds convenience, allowing for quick and easy ignition on the go. **

Pros

  • Powerful Engine: The single-cylinder, four-stroke engine provides excellent torque and horsepower, making it capable of tackling tough trails.
  • User-Friendly Features: The automatic gearbox and electric starter enhance accessibility for riders of all skill levels.
  • Comfortable Suspension System: The dual suspension setup ensures a smooth ride over rough terrain, contributing to overall rider comfort.

Cons

  • Weight: At 266.3 kg (587 pounds), the BX400-U4 Sierra may feel heavy for some riders, particularly during maneuvering.
  • Limited Power-to-Weight Ratio: With a power-to-weight ratio of 0.0714 HP/kg, performance may lag compared to lighter, sportier models.
  • Fuel Capacity: While the 13.5-liter tank is decent, extended trips might necessitate frequent refueling stops.

Technical details

Source specification data

Make
BamX
Model
BX400-U4 Sierra
Price
S
$ 4999.
Prices
depend on country, taxes, accessories, etc.
Category
ATV
Light
12V35W/35W x 2, 12V5W x 2 (front)
Starter
Electric
Electrical
YTX-20BS battery.
Color Options
Green camo, brown camo
Power
19.00 HP (13.9 kW))
Torque
25.00 Nm (2.5 kgf-m or 18.4 ft.lbs) @ 5500 RPM
Gearbox
Automatic
Ignition
CDI
Driveline
CVT Fully Automatic w/Reverse
Fuel System
Carburettor
Bore X Stroke
83.0 x 71.6 mm (3.3 x 2.8 inches)
Compression
9.5:1
Displacement
387.00 ccm (23.61 cubic inches)
Cooling System
Oil & air
Engine Details
Single cylinder, four-stroke
Lubrication System
Pressure/Splash
Transmission Type Final Drive
Shaft drive (cardan)
Dry Weight
266.3 kg (587.0 pounds)
Seat Height
864 mm (34.0 inches) If adjustable, lowest setting.
Oil Capacity
1.70 litres (0.11 quarts)
Fuel Capacity
13.50 litres (3.57 gallons)
Ground Clearance
254 mm (10.0 inches)
Power Weight Ratio
0.0714 HP/kg
Rear Tyre
25/10-12
Front Tyre
25/8-12
Rear Brakes
Single disc
Front Brakes
Double disc
Rear Suspension
Swing Arm
Front Suspension
Double A-Arm

Available colors

Green camobrown camo