PW80 Cylinder Kit Costs & Yamaha's Iconic Bike

For many young riders and their parents, the Yamaha PW80 represents a pivotal stepping stone into the thrilling world of off-road motorcycling. Its reputation as a robust, non-intimidating machine has made it a perennial favourite since its introduction. Whether you're looking to revitalise a beloved machine or enhance its performance, understanding the costs associated with essential components, such as a cylinder kit, is crucial. This article will not only detail what you can expect to pay for a high-quality PW80 cylinder kit but also provide an in-depth look at the bike's mechanics, features, and overall appeal, helping you make informed decisions about its upkeep and continued enjoyment.

The Yamaha PW80 has always been a top choice when purchasing a powerful yet non-intimidating kids' dirt bike. Introduced in 1991, this two-wheeler has dominated the youth sub-segment with its rugged charm and straightforward features. Given the bike’s appeal to the young crowd, it would be interesting to know what else it offers – which you will find in this guide.

Understanding Your PW80 Cylinder Kit Investment

When it comes to maintaining or upgrading your Yamaha PW80, a cylinder and piston kit is often a key consideration, especially if you're undertaking a complete engine rebuild or aiming to boost performance. You might have encountered various options online, and it's essential to understand what constitutes a good purchase.

A comprehensive PW80 Cylinder and Piston Kit is designed to replace your original parts, often with the aim of outperforming them. This is vital whether your PW80 is used for casual rides or for competitive racing. Such kits typically include the cylinder and piston, but it's important to note that some, like the one we're discussing, may not include vital components such as cylinder studs. These would need to be purchased separately to ensure a complete and correct installation.

Regarding cost, the Manufacturer's Suggested Retail Price (MSRP) for a PW80 Cylinder and Piston Kit can be upwards of £200 (approximately $250 USD). However, depending on the supplier and current promotions, you can often find these kits at significantly lower prices. For instance, a high-value kit might retail for around £100 (approximately $120 USD) and sometimes even be on sale for as little as £80 (approximately $99.99 USD). This represents substantial savings while providing a full and ready-to-install kit, reducing the risk of receiving damaged parts or leaving your bike unfinished in the garage.

Reputable suppliers often carefully select their parts to meet strict performance standards, offering excellent value in both high-performance and OEM replacement categories. Their commitment extends to robust customer support and diligent shipping, ensuring your parts arrive promptly and in perfect condition. This focus on customer satisfaction and product quality is paramount for any PW80 owner looking to invest in their bike's longevity and performance.

The Iconic Yamaha PW80: A Young Rider's Best Friend

Produced from 1991 to 2006, the Yamaha PW80 is widely considered the ideal learner's bike. It features an aggressive, two-tone styling, a robust chassis, and a monocross rear swingarm. This two-wheeler perfectly caters to beginners and more experienced young riders alike. Its convenient take-offs, clutch-less shifting, and a thrilling riding experience are just some of the perks this mini motorcycle can boast of. More importantly, it is a safe and fun pocket bike that is sure to get your first-time rider hooked on exploring the great outdoors.

The PW80 is a great introductory platform for first-timers to learn about shifting, control, and motorcycle upkeep. It also provides a method for fearless, self-paced learning to ride and have fun with a pocket bike. Its bulletproof engineering gives both parents and young riders a sense of safety and security, having the ability to practise driving with reduced risks. Best of all, its semi-automatic transmission and overall design provide an excellent setup for kids to learn and get closer to mastering the ropes of off-roading.

Delving into the PW80's Mechanical Heart

Engine Specifications

An air-cooled, two-stroke power mill with a forward-inclined single-cylinder arrangement brings the PW80 to life. The Yamaha PW80 carburettor, a Mikuni VM15SC, precisely handles the air-fuel mixture. The bore-stroke ratio is 47 x 45.6 mm (1.850 x 1.795 inches), while the compression ratio stands at 6.6:1. Piston displacement is 79 cm³ (4.821 in³). Overall, this engine configuration lends to a Yamaha PW80 top speed rating of approximately 64 km/h (40 mph) and a torque output of 6.3 Nm @ 5,000 RPM – not too shabby for an 80-class pocket bike.

Fuel and the Ingenious Yamaha Autolube System

Fuel tank capacity is 4.9 litres (1.29 US gal), which includes a 1-litre reserve. The choice of fuel should have a minimum PON 86/RON 91 rating, containing at most 5% MTBE, 10% ethanol, or 5% methanol.

Lubrication-wise, the PW80 utilises the clever Yamaha Autolube system. This is an oil injection system that precisely controls the amount of oil going into the engine depending on the throttle load. This innovative design eradicates the need for the rider to premix fuel and oil manually, a common practice on many two-stroke engines. The Autolube system ensures the engine receives the optimal amount of lubrication at all times, reducing excessive oil usage and minimising spark plug fouling, leading to cleaner combustion and more reliable performance. The engine oil required for this system is 0.65 litres (0.69 US quarts) for a periodic oil change or 0.75 litres (0.79 US quarts) for a total fill. It should be SAE 10W-30 Yamalube 4 or its equivalent, meeting SJ+ API certification and JASO T903 MA standards.

The Drivetrain: Smooth Power Delivery

Power travels to the ground via a 3-speed constant-mesh semi-automatic transmission and a wet-type, automatic centrifugal clutch assembly. Helical gears and a Daido DID 420M O-ring chain with 83 links plus a joint, coupled with a ball-bearing steering system, lend to the mini motorcycle’s superb handling and ease of operation on diverse types of terrain. The bike’s wide-split transmission is geared towards top-end speed and a 4.8-hp @ 5,500 RPM power output but may need to be adjusted to improve acceleration for specific riding styles.

Stock Gear Ratios of the Yamaha PW80

Ignition System

An electronic CDI (Capacitor Discharge Ignition; model: Mitsubishi F4T80571) and a ratchet-type kick-starter system power up the two-wheeler. Ignition timing is 20.6° BTDC @ 4,000 RPM. The PW80 is neither fitted with a battery nor any form of lighting but has a flywheel magneto serving as its charging system. It requires an NGK BP6HS / Nippon Denso W20FP (Australia, New Zealand) or NGK BPR6HS / Nippon Denso W20FPR-U (Canada, rest of the markets) spark plug. These plugs all have a gap of 0.6 – 0.7 mm (0.024 – 0.028 inches).

Wheels, Tyres, and Braking Performance

Tube-type 2.50-14 (4PR) front and 3.00-12 (4PR) rear tyres mount on steel spoke wheels. Both tyres have a 2-mm (0.08-inch) rim run-out limit and a respective wheel size of 1.40×14 and 1.60×12. Recommended cold-tyre pressure for both knobbies is 100 kPa (1.0 kgf/cm², 15 psi). As for brakes, the PW80 utilises a hydraulically-operated disc at the front and a leading-trail drum brake at the back. The front has a diameter of 95 mm (3.74 inches), with the rear measuring 110 mm (4.33 inches). The single front disc and rear drums, coupled with grippy factory tyres, complete the minibike’s tyre-and-wheel assembly.

Suspension and Handling

For its suspension system, the bike has front telescopic forks and a monocross swingarm – each offering a respective wheel travel of 110 mm (4.33 inches) and 95 mm (3.74 inches). Plus, its 41.5-inch wheelbase and 7.3-inch ground clearance (unloaded) make for tight steering angles and provide ample clearance when traversing technical trails and bumpy roads. These suspension units pair with coil-spring, oil damper shocks at the front, and oil-damped gas shocks at the rear. Despite the setup, the PW80’s suspension system is considered conservative and has a proclivity to bottom out if used for jumps or subjected to hard riding.

Dimensions and Capacities

Vehicle measurements remained unchanged across all models and markets. For the ’03 iteration of the PW80, overall dimensions are 1,540 x 640 x 880 mm (60.6 x 25.2 x 34.6 inches – L x W x H). Seat height is 635 mm (25 inches) and works for kids between the ages of 7 and 11 not exceeding 4’7″ in height. Curb weight (including oil and fuel) is at 61 Kg (134.5 lbs.), while dry weight is 57 Kg (126 lbs.). As for payload capacity, this 79-cc motorbike can accommodate any passenger not exceeding 40 Kg (88 lbs.).

Exterior Design and Build Quality

The build quality of the PW80 Yamaha is rock-solid, with its high-tensile, backbone-type steel frame (26° caster angle, 62 mm trail) that is robust yet lightweight. Mated to this tubular steel frame are plastic body panels in white and blue. Earlier Yamaha PW80 models had more colour options – red/white, purple/white, and even pink/white. The body-matching saddle seat is comfortably long, making all-afternoon rides more enjoyable. High-clearance front fenders provide the rider much-needed protection from mud and water but could do better in doing the same for the radiator.

Yamaha PW80 Market Value: Then and Now

Understanding the value of a Yamaha PW80, both new and on the secondhand market, can provide context for its parts and maintenance costs. Based on collected data, the original Yamaha PW80 MSRP ranged from approximately £800 (incoming year) to £1,250 (1997 model). The peak value of the minibike went down to £1,050 in its final year.

Conversely, resale values can fall between £175 and £1,500. Of all secondhand versions, pre-2001 models appear to keep their value best, while post-2000 PW80s typically range from £175 to £525.

Yamaha PW80 Price History (Approximate GBP Conversion)

Against its competitors in the market, the Yamaha PW80 looks to be competitively priced. For instance, the same-class Suzuki JR80 sells for £320 – £720, the Yamaha TT-R90 for £320 – £1,050, and the Honda XR80 for £800 – £960. The larger-displacement Kawasaki KLX110 sells for £320 – £1,130. There is not much difference between auction listings and resale pricing of pre-loved Y-Zingers found in trader sites. But interestingly, units released in Australia seem to have been sold for up to £320 more than their list price in North America.

Yamaha PW80: A Balanced Perspective (Pros and Cons)

Like other youth bikes, the brawny Yamaha PW80 offers a mix of praiseworthy attributes and downsides. Surely, what it lacks can be easily compensated through aftermarket upgrades. However, you have your budget, your inner mechanic, and your child’s age to account for. Here are some things to consider:

Pros

• Aggressive, race-ready aesthetics
• Easy-to-handle top speed and top-end performance
• Reliable, punchy engine and a smooth, 3-speed semi-automatic gearbox
• Monocross rear suspension lending to predictable handling – perfect for beginners
• Yamaha Autolube oil injection system eliminating the need to premix
• Hand-operated levers make for efficient braking
• In-tank saddle seat providing riding comfort and aiding in easy cruising control
• High-clearance fenders provide ample mud and splash protection
• Huge aftermarket support, easy-to-procure Yamaha PW80 parts, and reasonably priced servicing

Cons

• The absence of built-in storage
• Could have done better with two (2) brake levers – one on each side of the handgrips
• Not ideal for jumps due to some flimsy front-end components
• No rear disc brakes nor electric starting system
• No headlight, lighting coil, or instrument console
• Increased maintenance due to its chain-and-sprocket setup needing attention and proper upkeep
• Limited colour options for the last model years of the minibike

About Yamaha: A Legacy of Innovation

Yamaha Motor Company Ltd. is a world-renowned powerhouse and pioneer in several automotive fields. Founded in 1887, the maker of the Yamaha PW80 began as a manufacturer of pianos and other musical instruments. It wasn’t until after WWII that the company entered the automotive industry by initially producing motorcycles, and not until 1955 that it decided to part ways with its parent company. The Japanese firm started focusing on creating and developing motorised vehicles like the Yamaha PW80 and has not looked back since. Because of its unrelenting passion and strive for excellence, Yamaha has made itself known as the world’s unrivalled water vehicle manufacturer and a force to be reckoned with in the ATV and motorcycling industries.

Frequently Asked Questions (FAQs)

How much does a PW80 cylinder kit cost?

The MSRP for a PW80 cylinder and piston kit is typically upwards of £200. However, many retailers offer them for around £100, with sales sometimes bringing the price down to as low as £80 for a comprehensive kit. Prices can vary based on the kit's contents and the supplier.

What kind of oil does a Yamaha PW80 use?

The Yamaha PW80 uses a Yamaha Autolube oil injection system, which means it requires a specific 2-stroke engine oil. The recommended oil is SAE 10W-30 Yamalube 4 or an equivalent oil that meets SJ+ API certification and JASO T903 MA standards. This system eliminates the need to premix fuel and oil.

Is the Yamaha PW80 a 2-stroke or a 4-stroke?

The Yamaha PW80 is a two-stroke engine. It features an air-cooled, single-cylinder, two-stroke power mill.

Does the Yamaha PW80 have a clutch?

The Yamaha PW80 features a wet-type, automatic centrifugal clutch assembly. This works in conjunction with its 3-speed constant-mesh semi-automatic transmission, allowing for clutch-less shifting, which is ideal for beginner riders.

Is the Yamaha PW80 a good beginner bike?

Absolutely. The Yamaha PW80 is widely regarded as an excellent learner's bike. Its semi-automatic transmission, non-intimidating power delivery, robust chassis, and straightforward features make it perfect for young riders to learn control, shifting, and basic motorcycle upkeep in a safe and fun environment.

What is the top speed of a PW80?

The Yamaha PW80 has a reported top speed of approximately 64 km/h (40 mph). This speed is suitable for young riders, offering enough excitement without being overly intimidating.

Conclusion – Yamaha PW80 Dirt Bike Review

What makes the Yamaha PW80 the perfect beginner’s bike is its ability to balance difficulty with ease. The semi-automatic transmission, the disc-drum brake system combo, the clutch-less shifting (among other things) – all these elements contribute to a novice’s riding adeptness and speed-to-competency. While the PW80 does have its fair share of flaws, they often seem negligible next to the minibike’s numerous high points. Investing in quality parts like a new cylinder kit ensures this beloved machine continues to deliver reliable performance. The Yamaha PW80 is an unquestionably priceless childhood memento and a worthwhile buy. Its most significant downside, perhaps, is simply that your kid will eventually grow up and inevitably leave this two-wheeler behind.

If you want to read more articles similar to PW80 Cylinder Kit Costs & Yamaha's Iconic Bike, you can visit the Maintenance category.