The 2021 Yamaha YZ85 is a highly competitive motocross bike in the 85cc class, a segment known for developing young talent. As a long-standing model in Yamaha's YZ lineup, it consistently receives updates to maintain its performance edge. This is a pure dirt bike, designed exclusively for off-road racing and aggressive trail riding. The YZ85 typically comes in a single, well-equipped trim, and new pricing often hovers around $4,899. Its popularity stems from Yamaha's reputation for robust engineering and a focus on delivering a potent, rider-friendly package that appeals to aspiring racers and experienced riders alike looking for a capable 85cc machine.
The Good
The 2021 YZ85 excels with its thrilling engine performance and renowned Yamaha reliability. Its sharp, race-bred design evokes excitement, while practical aspects like a comfortable riding position and accessible maintenance provide long-term satisfaction. It offers exceptional value for aspiring racers.
The Bad
Potential owners should be aware that the 2021 Yamaha YZ85, like many high-performance 85cc motocross bikes, demands frequent maintenance and specialized parts. Fueling is strictly for pre-mix, and its powerband can be unforgiving for novice riders. Suspension setup may require tuning for optimal performance.
2021 Yamaha YZ85: Quick Overview
- Engine: Liquid-cooled, 2-stroke, reed-valve induction, single-cylinder
- Displacement: 85cc
- Bore x Stroke: 47.5mm x 47.8mm
- Compression Ratio: 8.2:1 (Low) to 10.2:1 (High)
- Fueling: Carburetor (Mikuni VM28)
- Ignition: CDI
- Transmission: 6-speed constant mesh
- Clutch: Wet, multiple disc
- Final Drive: O-ring chain
- Horsepower: Approximately 17-18 HP (est. at crankshaft)
- Fuel Economy: Not applicable/rated for motocross use. Fuel consumption is highly dependent on riding style and conditions, typically measured in hours of operation rather than MPG. Owners will use pre-mix fuel.
- 0-60 Times: Not applicable/rated for motocross use. Acceleration is measured by track performance and lap times.
- Towing Capacity: Not applicable (This is a dirt bike, not a vehicle designed for towing).
- Frame: High-tensile steel semi-double cradle
- Front Suspension: 36mm inverted telescopic fork with adjustable compression and rebound damping. Travel: 10.8 inches.
- Rear Suspension: Single shock with adjustable preload, compression, and rebound damping. Travel: 10.4 inches.
- Front Brake: Hydraulic disc
- Rear Brake: Hydraulic disc
- Front Tire: 70/100-17
- Rear Tire: 90/100-14
- Ground Clearance: 13.4 inches
- Seat Height: 32.1 inches
- Wheelbase: 50.2 inches
- Fuel Tank Capacity: 1.3 gallons
- Dry Weight: 167 lbs
- Trim-Level Features: The 2021 YZ85 typically comes in one well-equipped trim focused on performance. Key features include the powerful 2-stroke engine, robust suspension, strong braking system, durable chassis, and rider-friendly ergonomics designed for aggressive off-road riding and racing.
2021 Yamaha YZ85 Specifications
Vehicle Information
| Year | 2021 |
| Make | Yamaha |
| Model | YZ85 |
| Trim | - |
| Style | - |
| Type | Motorcycle |
| Category | Motorcycle |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | IWATA |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 85cc 1cyl |
| Engine Size | 85L |
| Engine Cylinders | 1 |
| Transmission | 6 Motorcycle - Chain Drive |
| Transmission Type | Manual |
| Transmission Speeds | 6-Speed |
| Drivetrain | - |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
Vehicle History Report
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What Problems Does the 2021 Yamaha YZ85 Have?
The 2021 Yamaha YZ85 is generally considered a very reliable machine within the highly demanding world of youth motocross. However, like all high-performance two-stroke engines, it requires diligent and consistent maintenance to prevent issues. Frequent owners report that the most common 'problems' are not inherent design flaws, but rather the expected results of hard use. This includes the need for regular top-end rebuilds (piston and rings) every 50-70 hours of aggressive riding, and potentially a full engine rebuild at higher hour intervals. Clutch wear is also common due to the nature of motocross riding, especially for younger riders learning clutch control. Some owners have noted that the stock exhaust packing may need replacement more frequently than on less performance-oriented bikes. Suspension components, while high-quality, are subject to wear and tear from impacts, and seals can eventually fail, leading to leaks, which is standard for any dirt bike pushed to its limits. Specific to the 2021 model year, there haven't been widespread, well-documented chronic issues reported that would indicate a systemic weakness. Yamaha's track record with the YZ line is one of robust engineering and durability when properly maintained. Recalls for this specific model year are rare, and typically would be for minor safety-related components if any. Long-term reliability is heavily contingent on the owner's commitment to the maintenance schedule. Neglecting oil changes, air filter cleaning, or failing to address minor leaks promptly can accelerate wear and lead to more significant and costly repairs down the line. For instance, a torn air filter can allow dirt into the engine, causing premature cylinder and piston damage. Overheating due to low coolant levels or a malfunctioning radiator fan (if equipped, though typically not on 85cc models) can lead to more severe engine problems. The transmission and clutch are robust but can be stressed by improper shifting or excessive clutch slipping. Overall, while the YZ85 is built to withstand the rigors of racing, its longevity is directly proportional to the owner's attention to detail in its upkeep.
How long will the 2021 Yamaha YZ85 last?
Estimating mileage for a 2021 Yamaha YZ85 is challenging as these bikes are typically measured in operating hours rather than miles. A competitive racer might accumulate 50-100 hours of riding per year, while a recreational rider might do significantly less. With diligent maintenance, including regular top-end rebuilds every 50-75 hours and periodic clutch and bearing replacements, the core engine and chassis of a YZ85 can last for hundreds of hours, effectively providing many years of service. However, the definition of 'serviceable' changes; a race bike might be considered 'worn out' by a competitive rider long before it is mechanically unsound. Weaknesses over time are primarily related to wear and tear on high-stress components like the piston, rings, clutch plates, and suspension seals. The two-stroke engine's inherent design requires more frequent internal component replacements than a four-stroke. Proper care, regular fluid changes, and timely part replacements are critical for maximizing its lifespan and maintaining performance.
What Technology & Safety Features are Included?
The 2021 Yamaha YZ85 is a dedicated motocross machine, and as such, it eschews the typical automotive-style technology found in cars. There are no built-in infotainment systems, touchscreens, or entertainment features. Similarly, driver-assistance systems like adaptive cruise control or lane departure warnings are entirely absent. The focus is purely on providing a raw, unadulterated riding experience optimized for racing. Safety features are rudimentary and focused on the machine's mechanical integrity and rider control. This includes a robust braking system with hydraulic discs front and rear, offering strong stopping power essential for control on the track. The chassis is designed for stability and handling, with features like a high-tensile steel semi-double cradle frame contributing to its predictable behavior. The suspension, adjustable for compression and rebound, allows riders to fine-tune the bike's response to various track conditions, indirectly contributing to safety by enhancing control. The ergonomic design, including the seat shape and handlebar position, is intended to facilitate rider movement and stability. Optional features are typically performance enhancements rather than technology upgrades. These might include different exhaust systems for improved power delivery, aftermarket suspension components for specialized tuning, or lighter wheels. Crash-test ratings are not applicable to motocross bikes, as they are not designed or tested for impact survivability in the same way as road-going vehicles. The YZ85's safety is primarily derived from its mechanical performance, rider skill, and the rider's protective gear. The bike's technology is mechanical: a potent two-stroke engine, a precise transmission, and well-engineered suspension and braking systems, all designed to provide the rider with the maximum possible feedback and control in a high-speed, off-road environment.
What Colors Options are Available?
Exterior Colors
Team Yamaha Blue
White
Black
2021 Yamaha YZ85 Prices and Market Value
When new, the 2021 Yamaha YZ85 typically had an MSRP around $4,899. On the used market, prices can vary significantly depending on condition, hours of use, and any modifications. You can generally expect to find used 2021 YZ85 models ranging from $3,000 to $4,000, with exceptionally clean or low-hour examples potentially commanding slightly higher prices. Depreciation is relatively moderate for well-maintained motocross bikes in this class. Factors affecting resale value include the number of hours on the engine (especially the top-end), the condition of the suspension and tires, the presence of any cosmetic damage, and whether original parts have been replaced with aftermarket ones. Bikes that have been meticulously maintained, have service records, and are still in good cosmetic condition will hold their value best. A bike that has been raced heavily and shows significant wear and tear will depreciate more rapidly.
2021 Yamaha YZ85 Cost of Ownership
Owning a 2021 Yamaha YZ85 involves costs that can be considered moderate to high, depending on usage. Insurance is typically low for dirt bikes compared to street vehicles. Fuel is a mix of gasoline and 2-stroke oil, with consumption varying greatly by riding style. Maintenance is the most significant ongoing cost; regular top-end rebuilds (every 50-75 hours), clutch replacements, and suspension servicing are essential and can be costly if not done by the owner. Repairs can also be expensive, especially if major engine or drivetrain components fail due to neglect. While not as cheap to own as a basic commuter vehicle, the YZ85 offers considerable value for its performance in the racing or recreational dirt biking world. It is a performance-oriented machine, and that demands a certain level of investment.
2021 Yamaha YZ85 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
2021 Yamaha YZ85 Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
2021 Yamaha YZ85 Insurance
Insurance for a 2021 Yamaha YZ85 is moderately priced, reflecting its status as a Motorcycle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2021 Yamaha YZ85 Compare to Other Motorcycle?
The 2021 Yamaha YZ85 competes in the highly contested 85cc motocross segment, primarily against rivals like the KTM 85 SX, Husqvarna TC 85, and Kawasaki KX85. In terms of performance, the YZ85 offers a strong, reliable two-stroke powerband that is well-balanced for its class, though some rivals might offer slightly more peak horsepower or a broader powerband depending on their specific tuning. KTM and Husqvarna, for instance, often boast more sophisticated engine characteristics and chassis dynamics, sometimes with dual-clutch setups. Features-wise, the YZ85 is quite standard for its class: a robust liquid-cooled engine, capable adjustable suspension (36mm KYB forks and a Kayaba shock), strong disc brakes, and a durable steel frame. KTM and Husqvarna often feature more premium components like WP suspension and sometimes even hydraulic clutches as standard. The Kawasaki KX85 is also a strong competitor, offering a similar feature set. Reliability is a strong suit for the YZ85, embodying Yamaha's reputation for building durable machines. While all high-performance two-strokes require diligent maintenance, Yamaha engines are known for their longevity when cared for. KTM and Husqvarna also have good reliability, but their more complex engines or specialized components might require more specialized knowledge for maintenance. The Kawasaki KX85 is also a reliable choice. Price-wise, the 2021 YZ85 typically sat in a competitive range, often slightly lower than its Austrian counterparts (KTM/Husky) when new, and similarly priced or slightly higher than the Kawasaki KX85. On the used market, all these bikes depreciate similarly, with condition being the primary driver.
Recommendations:
Recommendations:
- For similar alternatives: The Kawasaki KX85 is a very close competitor, offering comparable performance and reliability, often at a slightly more accessible price point. The KTM 85 SX and Husqvarna TC 85 are excellent choices if budget allows for potentially higher performance and more premium features, especially the TC 85 with its dual-clutch transmission.
- For a potentially better alternative (depending on priorities): If the rider is aiming for top-tier racing performance and has access to a knowledgeable mechanic, the KTM 85 SX or Husqvarna TC 85 might edge out the YZ85 due to their advanced components. However, for a rider prioritizing ease of maintenance, proven reliability, and a fantastic all-around package, the 2021 Yamaha YZ85 remains an outstanding and often preferred choice.
Final Verdict: Is the 2021 Yamaha YZ85 a Good Motorcycle?
The 2021 Yamaha YZ85 is an ideal choice for young, aspiring motocross racers and experienced junior riders looking for a competitive and dependable machine. It is absolutely worth buying for anyone serious about developing their skills in the 85cc class. Its popularity and continued success in junior racing are testaments to its performance and Yamaha's renowned reliability.
Conditions for buying:
For riders who prioritize a proven, durable, and potent motocross bike that offers a fantastic platform for learning and competition, the 2021 Yamaha YZ85 is a highly recommended purchase.
Conditions for buying:
- New: Buying new offers the peace of mind of a fresh machine with no previous wear, though it comes at a higher cost.
- Used: A used YZ85 can be an excellent value, provided it has been well-maintained. Thorough inspection of the engine (especially hours on the top-end), suspension, and overall condition is crucial. Aim for bikes with service records if possible.
- Trims: The YZ85 typically comes in one well-appointed trim, so the decision is less about trim levels and more about the condition and maintenance history of the specific bike.
For riders who prioritize a proven, durable, and potent motocross bike that offers a fantastic platform for learning and competition, the 2021 Yamaha YZ85 is a highly recommended purchase.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma