Honda Rincon 680 Engine Explained

The Heart of the Beast: Understanding the 2018 Honda Rincon 680's Engine

The Honda Rincon 680 has long been a stalwart in the world of 4x4 ATVs, consistently representing the pinnacle of Honda's off-road offerings. Since its debut, this robust quad has seen relatively minimal changes, a testament to its enduring design and reliability. However, for those curious about what powers this formidable machine, particularly the 2018 model, understanding its engine and its capabilities is key. This article delves into the specifics of the Rincon 680's powerplant, exploring its features, performance, and how it compares in the competitive ATV landscape.

Engine Specifications: A Closer Look

At the core of the 2018 Honda Rincon 680 lies a liquid-cooled, 675cc, single-cylinder, four-stroke engine. This is a longitudinally mounted unit, a design choice that Honda states enhances efficiency by optimising power transfer to the wheels. The bore and stroke measure 102mm x 82.6mm, contributing to its substantial displacement.

In recent years, Honda has integrated advanced emissions control technology into the Rincon's engine. For the 2018 model, this includes an oxygen sensor, a catalytic converter, and dual spark plugs located in the cylinder head. These additions not only help the Rincon meet stricter environmental regulations but also contribute to improved fuel efficiency and a more consistent combustion process. The starter system is electric, with a recoil back-up for added peace of mind in challenging situations. The fuel system is managed by a 40mm EFI (Electronic Fuel Injection), ensuring precise fuel delivery for optimal performance and throttle response across various conditions.

Transmission and Drivetrain: Honda's Unique Approach

One of the most distinctive features of the Honda Rincon is its transmission. While most 4x4 ATVs in its class have adopted automatic CV-style transmissions with belts, Honda has steadfastly stuck with a more traditional, yet highly innovative, shiftable gearbox. However, this is not a purely manual affair. The Rincon's transmission offers a three-speed automatic or a push-button electronic shifting system. This allows riders to choose their preferred method of gear selection via an easily accessible switch on the handlebars. This versatility adds a significant element of enjoyment and control to the riding experience.

The transmission also features a conventional forward, neutral, and reverse gear selector, conveniently located on the side of the ATV under the handlebars. The final drive is via a shaft, a robust and low-maintenance system. The Rincon also boasts a selectable two-wheel-drive and four-wheel-drive system, with the selector switch also mounted on the handlebars for easy access while riding. A notable omission, however, is the lack of a front differential locking capability, a feature found on some competitors like the Kawasaki Brute Force and Suzuki KingQuad, which can be beneficial in extreme off-road scenarios.

Chassis and Suspension: Comfort Meets Capability

The chassis of the 2018 Rincon has largely remained consistent, with key updates focusing on durability. The front suspension is a dual-A-arm design providing 6.9 inches of wheel travel, utilising a non-adjustable shock. The front upper A-arms have transitioned from aluminium to steel, a move that, while adding a slight amount of weight, significantly bolsters strength and longevity.

At the rear, an independent suspension system, also featuring a dual-A-arm design, offers a more generous 8.0 inches of wheel travel. This sophisticated suspension setup, combined with the 25-inch tall Dunlop tires, contributes to an impressive ground clearance of 9.1 inches, allowing the Rincon to navigate obstacles like rocks and trail debris with ease.

Weighing in at a competitive 657 pounds, the Rincon is notably lighter than many of its rivals, such as the Yamaha Kodiak 700. This weight advantage translates into a more nimble and responsive feel when manoeuvring. However, the absence of electronic power steering (EPS) is a point of consideration. Riders may find the steering to be heavier at times, particularly during slow-speed manoeuvres, and the handlebars can exhibit some wandering at higher speeds. The inclusion of EPS would undoubtedly enhance the overall comfort and control, especially for extended riding sessions.

Cockpit and Ergonomics: Designed for the Rider

Honda has prioritised rider comfort and ease of use in the Rincon's cockpit. The handlebars are positioned at a comfortable height with a sweep that facilitates effortless steering, even from a seated position. The transition from sitting to standing is made easy by the tall seat height and low footpeg placement, and the seat itself is designed for long-duration comfort.

All essential controls, including the thumb throttle, brake levers, gear shifter, 2WD/4WD selector, and transmission mode switch, are ergonomically placed and easily accessible without the rider needing to remove their hands from the grips. This thoughtful design enhances safety and allows the rider to remain focused on the trail ahead.

Work and Play: Versatility in Application

The Honda Rincon 680 excels not only in recreational riding but also proves highly capable in work environments. It features sturdy steel cargo racks on both the front and rear, capable of carrying a combined weight of 199 pounds. For added convenience, a DC outlet is provided on the front plastic near the gas tank, perfect for charging electronic devices. A small storage box is also integrated into the front fender, though a larger, built-in cargo box for tools and trail essentials would be a welcome addition.

The Rincon has a total hauling capacity of 850 pounds. However, it's worth noting that it does not come equipped with a hitch receiver, meaning an aftermarket purchase would be necessary for towing applications.

On the Trail: Performance and Handling

First impressions when mounting the 2018 Rincon are consistently positive regarding its comfortable riding position and intuitive controls. The engine delivers its power smoothly through the three gears, offering a decent amount of torque and reaching a top speed of approximately 65 miles per hour. The ability to downshift manually provides effective engine braking, a valuable feature when descending steep inclines.

While the powerplant is not the most aggressive in its class, it provides ample power for both demanding workloads and enjoyable trail riding. The transmission's automatic mode can occasionally exhibit less-than-ideal shift points, sometimes shifting too early or too late. Engaging the manual shift mode resolves these occasional surprises and introduces a more engaging and fun riding dynamic that sets the Rincon apart.

The braking system is effective, with separate levers for the front brakes (dual hydraulic discs) and a foot-pedal operated single hydraulic disc brake at the rear. The independent rear suspension contributes to a plush ride over choppy terrain and rough, rutted trails.

Cornering is an area where the Rincon could benefit from enhancements. The machine can feel somewhat tippy in turns, potentially due to its tall seat height and narrow track width. The lack of EPS likely contributes to the steering responsiveness, and its inclusion would also aid in low-speed crawling and tight turns. Engaging the 4x4 mode offers a noticeable improvement in traction without significantly altering the steering feel.

Comparative Table: Rincon vs. Key Competitors

To better understand the Rincon's position in the market, let's compare its key specifications with two prominent competitors:

Frequently Asked Questions (FAQs)

Q1: What is the engine displacement of the 2018 Honda Rincon 680?
The 2018 Honda Rincon 680 features a 675cc engine.

Q2: Does the 2018 Honda Rincon 680 have power steering?
No, the 2018 model does not come with electronic power steering (EPS).

Q3: Can I lock the front differential on the 2018 Honda Rincon 680?
No, the Rincon 680 does not offer a front differential lock feature.

Q4: What type of transmission does the 2018 Honda Rincon 680 have?
It features a 3-speed automatic transmission that can also be manually shifted via push-buttons.

Q5: What is the top speed of the 2018 Honda Rincon 680?
The top speed is approximately 65 miles per hour.

Final Thoughts: A Durable Classic with Room for Improvement

Honda's reputation for building durable and long-lasting machines is well-earned, and the 2018 Rincon 680 is a prime example. It's a capable and enjoyable ATV for both recreational trail riding and demanding work tasks. While the Rincon has remained largely unchanged for over a decade, a period that speaks volumes about its successful design and market appeal, there are areas where modern advancements could elevate the experience. The addition of electronic power steering, preload-adjustable shocks, and a front locking differential would undoubtedly be welcome improvements.

Despite these potential enhancements, the 2018 Honda Rincon 680 remains a strong contender, offering a unique blend of Honda reliability, user-friendly features, and capable performance. It continues to be a testament to Honda's philosophy of "if it isn't broken, don't fix it," while still providing a thoroughly enjoyable and practical off-road experience. The starting price for the 2018 model was $9399, available in Red or Phantom Camo.

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