Honda FourTrax Rincon 680

Big and strong. No two words better sum up Honda's 680 FourTrax Rincon, the flagship of Honda's powerful and capable utility ATV line-up. 700-class motor. Electronic fuel injection. Fully independent rear suspension. TraxLok push-button, on-demand 2WD/4WD - This machine has it all.
With 675cc of single-cylinder 4-stroke punch this is the largest ATV ever produced by Honda. It features a new automotive-style Honda automatic transmission, with an hydraulic torque converter that has three independent hydraulic clutches. It’s designed for toughness and durability, and is virtually impervious to dirt or water.


Specifications TRX680FA:


Engine type

675cc liquid-cooled OHV semi-dry-sump longitudinally mounted single-cylinder four-stroke

Bore and Stroke

102.0mm x 82.6mm


Electronic fuel injection with IACV idle control


Full-Transistorized type with electronic advance


Electric with auxiliary recoil

Drive Train


Automatic with hydraulic torque converter, three forward gears, reverse and electronic controls


Direct front and rear drive-shafts with torque-sensitive front differential


Front suspension

Independent double-wishbone; 175mm travel

Rear suspension

Independent double-wishbone; 203mm travel

Front brakes

Dual hydraulic 180mm disc

Rear brakes

Single hydraulic disc

Front tyres

25 x 8-12 radial

Rear tyres

25 x 10-12 radial










Seat height


Ground clearance


Fuel capacity

17 litre, including 4 litre reserve

Dry weight


Model ID




New larger 675cc engine for increased power.

New 40mm fuel injection system for consistent performance at high altitude, improved cold weather starting, improved fuel consumption and increased power.

New dual front disc brakes feature callipers with patented built-in scraper for improved braking performance in all conditions.

New brake pads feature thick, long-wear material with improved mud durability, feel and control. Pads feature internal scraper that give audible warning when pad life is low.

Washable air filter for easy maintenance and consistent performance.

New low-fuel warning light.

New 18-amp battery for increased performance.

Honda's automotive-style automatic ATV transmission draws power through a hydraulic torque converter to drive three forward gears and reverse.

The Rincon AT 2/4wd features Honda's fully independent ATV rear suspension for comfortable cruising over the toughest terrain.

Extensive weight-saving measures include the use of aluminium for the following components: forged front upper control arms, rear upper and lower control arms, rear knuckles, front and rear wheels.

SUV styling features flowing mud guards with integrated headlights and taillights.

Liquid-cooled overhead-valve single-cylinder fuel injected 675cc four-stroke engine is mounted longitudinally in the frame, allowing direct drive-shaft alignment to front and rear wheels for improved drivetrain efficiency.

Liquid cooling provides consistent engine operating temperature in extreme conditions for maximum power output and long engine life.

Camshaft is located adjacent to the cylinder head, reducing engine height. Together with the semi-dry sump, engine height is further reduced for a low centre of gravity and excellent handling.

Four-valve cylinder head with two short pushrods provides a broad powerband for optimum performance and engine efficiency.

Snorkel-type air intake system is specially designed for water crossings.

New fuel injection features 40mm throttle body, 12-hole two-pattern injector, and IACV (Idle Air Control Valve).

New remote-mounted fuel pump with internal fuel reservoir maintains consistent fuel injection performance in rough and varying terrain.

New IACV valve maintains consistent idle in all conditions

Stainless steel exhaust system provides superior corrosion resistance and minimises noise levels.

Unique semi-dry-sump oiling system locates the oil tank inside the engine cases, lowering engine height and allowing optimum engine placement for excellent ground clearance and superb handling.

Standard high-flow oil cooler assures optimal engine lubrication under difficult operating conditions.

The multiple-scavenging oil system utilizes an oil pump with three sintered steel rotors (one for feed, two for scavenge) to provide a stable oil supply in diverse riding conditions.

Unique temperature indicator uses two sensors to monitor both oil and coolant temperatures.

High-capacity coolant radiator is rated at 20.2 kW for efficient engine cooling in extreme operating conditions.

Compact, flat-shaped radiator fan motor is lightweight and contributes to optimum engine placement.

Rubber-cushion engine mounting system and gear-driven counterbalancer reduce engine vibration.

Closed crankcase vent system safeguards against engine oil contamination.

TraxLok® is easily engaged with a simple thumb-switch on the right handlebar. An electromagnetic mechanical clutch unit (EMCU) located on the centre of the propeller shaft engages 4WD with a quiet two-way roller clutch. TraxLok ensures smooth operation by employing a magnetic switching mechanism that engages when front and rear wheel speeds vary by less than 6 mph.

Torque-sensitive front differential provides superior traction compared to conventional limited-slip designs, and reduces torque steer substantially for less steering effort in 4WD mode.

The rear drive-shaft joins the rear final-drive gearcase at a 77° angle, eliminating the weight and complexity of an additional shaft and joints. The design also contributes to the Rincon's considerable 203mm of rear wheel travel.

The automotive-style Honda automatic transmission features a hydraulic torque converter, three hydraulic clutches and an electronic control unit (ECU) to automatically select one of three forward gears and one reverse gear. The ECU monitors throttle opening, vehicle speed, engine rpm, gear selector position, brake application and engine oil temperature.

The Honda automatic transmission shifts electronically - eliminating unsightly and trouble-prone vacuum lines - and features engine braking, unlike conventional belt-drive designs.

The Honda automatic transmission features a filtration system to protect against external contamination. The compact and maintenance-free design means there are no belts to wear out and replace. Using multi-filtered engine oil as hydraulic fluid, the design also simplifies maintenance and ensures an adequate oil supply in all operating conditions.

Electric Shift Program (ESP®) allows the rider to manually select gears by simply pressing two push-buttons mounted on the left handlebar.

A handlebar-mounted control switches the automatic transmission between ESP mode and automatic operation.

A convenient column-style gear lever permits the rider to easily select Drive, Neutral or Reverse.

A rugged steel perimeter frame and four-wheel independent suspension provide an exceptional 254mm of ground clearance.

A separate rear frame utilizes the final-drive gear case as a stressed member, reducing overall vehicle weight.

The Rincon's steering mechanism design allows light steering effort and a tight turning radius of 3.3m.

Independent double-wishbone front suspension uses premium shock absorbers to provide 175mm of suspension travel for a plush, comfortable ride.

Honda's independent rear suspension uses a double-wishbone design and features forged aluminium knuckles and upper/lower A-arms to substantially reduce unsprung weight. The rear knuckle pivots use lightweight metal bushings in place of conventional ball joints and radius arms, eliminating toe-in as the rear suspension travels through its stroke. This simple design maintains rear wheel alignment and further reduces unsprung weight, contributing to responsive overall handling.

Lightweight single-tube gas-charged rear shocks and an anti-sway bar provide plush, well-controlled damping throughout the Rincon's exceptional 203mm of wheel travel.

New dual front disc brake callipers feature a patented built-in scraper system to remove mud and snow from inside the front wheel to help prevent build-up of debris between calliper and rim to ensure consistent braking performance.

Brake pads feature thick, long-wear material with improved mud durability, feel and control. Pads feature internal scraper that gives audible warning when pad life is low.

A rear centre hydraulic disc brake and self-adjusting mechanical rear parking brake are mounted on the rear drive-shaft, further reducing unsprung weight and contributing to the Rincon's considerable ground clearance.

SUV-type radial tyres provide a smooth ride and exceptional handling. Tough, large-diameter 25 x 8-12 front tyres and 25 x 10-12 rear tyres provide added ground clearance.

Attractive SUV-style large-diameter 12-inch (305mm) aluminium wheels further reduce unsprung weight and contribute to superb handling.

Multi-function LCD digital instrumentation is compact, tough and waterproof, featuring large readouts for gear selector position, speedometer, odometer, resettable tripmeter and hourmeter/clock. Instrument housing includes LED lights for Drive, Neutral, Reverse, temperature warning and FI warning indicator. A fuel gauge located within the instrument housing comes as standard equipment.

Durable, comfortable, easy-to-use controls include a keyed ignition switch for added security, parking brake and a handlebar-mounted choke lever.

Convenient electric starter, with a lightweight auxiliary recoil starter and an automatic internal decompression system.

A tough rubber cover protects the gear-shift button from dirt, water and mud.

Handlebar switches, controls, indicator lights and warning labels use internationally approved ISO graphic symbols.

Waterproof accessory socket provides 12-volt, 10-amp power with a built-in temperature-type fuse.

Thickly padded seat uses dual-density foam to provide all-day riding comfort.

Large, lightweight plastic fuel tank with 17 litre capacity, including 4 litre reserve.

Side-opening compartment has 4 litres of storage capacity and can be opened when the rider is seated.