The 2009 Yamaha YZ85 is a revered youth competition motocross bike, part of Yamaha's long-standing lineage of high-performance off-road machines. It features a race-ready body style, built for aggressive riding and jumps. While the YZ85 platform has seen numerous updates over many years, the 2009 model was a strong contender in its generation. New pricing ranged around $3,599-$3,699. It stands out for its potent two-stroke engine and nimble handling, making it a popular choice for aspiring motocross racers.
The Good
The 2009 Yamaha YZ85 offers exhilarating two-stroke performance with a strong powerband and agile handling, appealing to the emotional desire for speed. Its Yamaha reliability and straightforward maintenance offer practical peace of mind. The aggressive, race-inspired design and excellent resale value make it a smart, enduring choice for young riders and their parents.
The Bad
As a high-performance two-stroke, the 2009 YZ85 requires frequent top-end rebuilds and proper fuel/oil mixing, which can be a commitment. Its aggressive powerband might be challenging for absolute beginners, and its small fuel tank limits extended riding. Clutch wear can also be accelerated with heavy use.
2009 Yamaha YZ85: Quick Overview
- Engine: Liquid-cooled, two-stroke, reed-valve inducted, 84.7cc single-cylinder engine.
- Horsepower: Estimated to be in the range of 28-30 horsepower, though Yamaha typically does not publish exact figures for competition models. It offers a very strong power-to-weight ratio.
- Fuel Economy: Not a primary design consideration for a competition bike. Fuel economy varies wildly based on riding intensity but is generally low, perhaps 20-30 MPG under aggressive use. It requires pre-mixed gasoline and two-stroke oil.
- 0-60 Times: Not applicable for motocross bikes. Performance is measured by acceleration off the line and through gears, which is extremely quick for its size.
- Towing Capacity: Not applicable. This is a competition dirt bike.
- Trim-Level Features: The 2009 YZ85 did not have distinct "trims" in the automotive sense, but came with a comprehensive package designed for racing. Key features included:
- Lightweight, semi-double-cradle steel frame for optimal balance of rigidity and flex.
- Fully adjustable 36mm inverted KYB® front fork, allowing precise tuning for various track conditions.
- Fully adjustable KYB® rear shock with a piggyback reservoir, providing excellent damping and rebound control.
- Strong front and rear hydraulic disc brakes for reliable stopping power.
- Six-speed, close-ratio transmission, perfectly matched to the powerband for rapid acceleration.
- Yamaha Power Valve System (YPVS) to broaden the engine's power delivery across the RPM range.
- Race-ready ergonomics, designed for optimal rider control and maneuverability.
- High-performance exhaust system, tuned for maximum power output.
- Standard wheel configuration featuring a 17-inch front and 14-inch rear wheel.
- Lightweight aluminum swingarm.
- Durable, aggressive plastic bodywork with Yamaha's iconic blue styling.
- Pro-Taper-style handlebars for rider comfort and control.
2009 Yamaha YZ85 Specifications
Vehicle Information
| Year | 2009 |
| Make | Yamaha |
| Model | YZ85 |
| Trim | - |
| Style | - |
| Type | Motorcycle |
| Category | Motorcycle |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | HAMAMATSU |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 85CC |
| Engine Size | 85L |
| Engine Cylinders | 1 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | - |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2009 Yamaha YZ85 Have?
The 2009 Yamaha YZ85, being a high-performance two-stroke motocross bike, has a set of frequently reported maintenance items and potential "problems" that are often simply part of owning and operating such a machine. The most common "issue" is the expected wear of the piston and rings, necessitating regular top-end rebuilds. For competitive racing, this is typically recommended every 20-40 hours of operation, depending on the rider and intensity. Neglecting this can lead to significant engine damage, but it's a routine procedure for two-stroke owners, not a design flaw.
Clutch wear is another common point, especially under hard riding and frequent use. Clutch plates may need replacement more often than on recreational bikes. Suspension components, particularly fork seals, are prone to leaking over time due to impacts, dirt, and general wear and tear; this is typical for all dirt bikes and requires periodic servicing.
Carburetor tuning can be sensitive to changes in altitude, temperature, or humidity, requiring riders to adjust jetting for optimal performance. While not a "problem," it's a necessary skill for two-stroke ownership. Bearing wear (wheel, swingarm, and linkage bearings) is also common over the long term, especially if not regularly cleaned and greased. Brake pads will wear faster than on less aggressive bikes.
Regarding recalls, there were no widespread major recalls specifically for the 2009 Yamaha YZ85 commonly reported. Recalls on dirt bikes are generally less frequent than for street vehicles and are typically component-specific if they occur. Long-term reliability of the core engine and chassis is excellent, provided the stringent maintenance schedule required for high-performance two-strokes is adhered to. The YZ85 platform is known for its durability, but neglect of air filter cleaning, proper fuel/oil mix, or scheduled rebuilds will invariably lead to premature failures.
Clutch wear is another common point, especially under hard riding and frequent use. Clutch plates may need replacement more often than on recreational bikes. Suspension components, particularly fork seals, are prone to leaking over time due to impacts, dirt, and general wear and tear; this is typical for all dirt bikes and requires periodic servicing.
Carburetor tuning can be sensitive to changes in altitude, temperature, or humidity, requiring riders to adjust jetting for optimal performance. While not a "problem," it's a necessary skill for two-stroke ownership. Bearing wear (wheel, swingarm, and linkage bearings) is also common over the long term, especially if not regularly cleaned and greased. Brake pads will wear faster than on less aggressive bikes.
Regarding recalls, there were no widespread major recalls specifically for the 2009 Yamaha YZ85 commonly reported. Recalls on dirt bikes are generally less frequent than for street vehicles and are typically component-specific if they occur. Long-term reliability of the core engine and chassis is excellent, provided the stringent maintenance schedule required for high-performance two-strokes is adhered to. The YZ85 platform is known for its durability, but neglect of air filter cleaning, proper fuel/oil mix, or scheduled rebuilds will invariably lead to premature failures.
How long will the 2009 Yamaha YZ85 last?
Dirt bikes like the 2009 Yamaha YZ85 are typically measured in hours of service rather than mileage. A well-maintained YZ85 used recreationally could easily provide 300-500+ hours of service, translating into many years of enjoyment for a young rider. For competitive racing, where the engine is pushed to its limits, components like the piston and rings are replaced much more frequently (e.g., every 20-40 hours), essentially refreshing the engine's top end.
Long-term durability of the frame, swingarm, and engine cases is excellent, assuming no catastrophic crashes or neglect. Over time, weaknesses tend to emerge in wear items. Suspension seals will eventually leak, requiring servicing. Chassis bearings (wheel, swingarm, linkage) will need periodic replacement if not diligently greased. The power valve system may accumulate carbon buildup, requiring cleaning. The exhaust pipe is also prone to dents or damage over years of off-road use. However, with consistent maintenance, the YZ85 is built to last.
Long-term durability of the frame, swingarm, and engine cases is excellent, assuming no catastrophic crashes or neglect. Over time, weaknesses tend to emerge in wear items. Suspension seals will eventually leak, requiring servicing. Chassis bearings (wheel, swingarm, linkage) will need periodic replacement if not diligently greased. The power valve system may accumulate carbon buildup, requiring cleaning. The exhaust pipe is also prone to dents or damage over years of off-road use. However, with consistent maintenance, the YZ85 is built to last.
What Technology & Safety Features are Included?
The 2009 Yamaha YZ85 is a purpose-built competition motocross machine, meaning its "tech" is entirely focused on performance and handling rather than creature comforts or advanced electronic systems found in street vehicles.
Regarding Built-in Tech, the primary feature is the Yamaha Power Valve System (YPVS). This mechanical system varies the exhaust port timing to optimize power delivery across a wider RPM range, enhancing the two-stroke engine's tractability and high-end power. The YZ85 also features an advanced carburetor for precise fuel mixture delivery and a digital CDI ignition system for accurate spark timing. Its high-performance, fully adjustable KYB suspension components (inverted front fork and piggyback rear shock) are also a form of built-in "tech," allowing riders and mechanics to fine-tune damping and preload to suit various track conditions and rider weights. This adjustability is crucial for competitive motocross.
Entertainment features are non-existent; this is a pure race bike designed for performance, not leisure listening or digital displays.
Similarly, Driver-Assistance features are absent. Rider skill, training, and experience are the only "assistance" for a YZ85 rider.
Safety Features are minimal and inherent to the sport. These include strong hydraulic disc brakes for effective stopping power, a lightweight and agile chassis that aids in rider control and maneuverability to avoid obstacles, and durable components designed to withstand the rigors of motocross riding. The primary safety for a motocross rider comes from personal protective equipment (helmet, goggles, chest protector, boots, knee braces, etc.) and safe track conditions.
Optional Features from the factory were limited. However, the aftermarket offers a vast array of performance upgrades such as aftermarket exhaust systems, engine modifications, suspension re-valving, and protective accessories like handguards, skid plates, and stronger levers.
Crash-Test Ratings are not applicable or available for competition dirt bikes. These machines are not subject to the same safety regulations or testing as on-road vehicles. Their design prioritizes performance and durability in an off-road racing environment.
Regarding Built-in Tech, the primary feature is the Yamaha Power Valve System (YPVS). This mechanical system varies the exhaust port timing to optimize power delivery across a wider RPM range, enhancing the two-stroke engine's tractability and high-end power. The YZ85 also features an advanced carburetor for precise fuel mixture delivery and a digital CDI ignition system for accurate spark timing. Its high-performance, fully adjustable KYB suspension components (inverted front fork and piggyback rear shock) are also a form of built-in "tech," allowing riders and mechanics to fine-tune damping and preload to suit various track conditions and rider weights. This adjustability is crucial for competitive motocross.
Entertainment features are non-existent; this is a pure race bike designed for performance, not leisure listening or digital displays.
Similarly, Driver-Assistance features are absent. Rider skill, training, and experience are the only "assistance" for a YZ85 rider.
Safety Features are minimal and inherent to the sport. These include strong hydraulic disc brakes for effective stopping power, a lightweight and agile chassis that aids in rider control and maneuverability to avoid obstacles, and durable components designed to withstand the rigors of motocross riding. The primary safety for a motocross rider comes from personal protective equipment (helmet, goggles, chest protector, boots, knee braces, etc.) and safe track conditions.
Optional Features from the factory were limited. However, the aftermarket offers a vast array of performance upgrades such as aftermarket exhaust systems, engine modifications, suspension re-valving, and protective accessories like handguards, skid plates, and stronger levers.
Crash-Test Ratings are not applicable or available for competition dirt bikes. These machines are not subject to the same safety regulations or testing as on-road vehicles. Their design prioritizes performance and durability in an off-road racing environment.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
2009 Yamaha YZ85 Prices and Market Value
When new, the 2009 Yamaha YZ85 carried an MSRP typically in the range of $3,599 to $3,699 USD. Today, as a used model, prices vary significantly depending on condition, maintenance history, and geographic location. Expect current used market prices to range from approximately $1,500 for a well-used but functional example, up to $3,000+ for a meticulously maintained or recently rebuilt bike.
Depreciation for the YZ85, while present, is relatively stable for a competition dirt bike. Its strong reputation for performance and reliability ensures consistent demand in the youth motocross community, helping it hold value better than some other vehicles. Factors heavily affecting resale value include the bike's overall mechanical and cosmetic condition, evidence of regular maintenance (especially top-end rebuilds), the presence of an hour meter (indicating low usage is a plus), and the quality of any aftermarket modifications. A stock or tastefully upgraded, clean bike with solid service records will command a premium.
Depreciation for the YZ85, while present, is relatively stable for a competition dirt bike. Its strong reputation for performance and reliability ensures consistent demand in the youth motocross community, helping it hold value better than some other vehicles. Factors heavily affecting resale value include the bike's overall mechanical and cosmetic condition, evidence of regular maintenance (especially top-end rebuilds), the presence of an hour meter (indicating low usage is a plus), and the quality of any aftermarket modifications. A stock or tastefully upgraded, clean bike with solid service records will command a premium.
2009 Yamaha YZ85 Cost of Ownership
Insurance for an off-road-only 2009 Yamaha YZ85 is generally inexpensive, often limited to theft coverage or not purchased if ridden exclusively on private land. Fuel costs involve buying gasoline and mixing it with two-stroke oil, adding to the per-gallon expense, and it consumes fuel quickly under aggressive riding.
Maintenance is the primary ongoing cost. This includes frequent air filter cleaning, transmission oil changes, spark plug replacements, and critically, top-end engine rebuilds (piston/rings) every 20-40 hours for competitive use. Suspension servicing and bearing replacements are also periodic necessities. Repairs are generally affordable if parts are sourced from the extensive aftermarket, and many owners perform work themselves due to the simpler nature of two-stroke engines. Overall, while the initial purchase price can be economical for a used model, the recurring maintenance, fuel, and wear item costs mean the 2009 YZ85 is a relatively costly vehicle to own properly, especially for a serious racer, rather than an economical one.
Maintenance is the primary ongoing cost. This includes frequent air filter cleaning, transmission oil changes, spark plug replacements, and critically, top-end engine rebuilds (piston/rings) every 20-40 hours for competitive use. Suspension servicing and bearing replacements are also periodic necessities. Repairs are generally affordable if parts are sourced from the extensive aftermarket, and many owners perform work themselves due to the simpler nature of two-stroke engines. Overall, while the initial purchase price can be economical for a used model, the recurring maintenance, fuel, and wear item costs mean the 2009 YZ85 is a relatively costly vehicle to own properly, especially for a serious racer, rather than an economical one.
2009 Yamaha YZ85 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
2009 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
2009 Yamaha YZ85 Insurance
Insurance for a 2009 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 2009 Yamaha YZ85 Compare to Other Motorcycle?
The 2009 Yamaha YZ85 competes in a fiercely contested class, primarily against other 85cc two-stroke motocross bikes. Its main rivals include the Kawasaki KX85, Suzuki RM85, and the KTM 85 SX.
In terms of Performance, the YZ85 is renowned for its revvy, high-RPM powerband, particularly strong on the top end, thanks in part to its Yamaha Power Valve System (YPVS). It's very competitive with the Kawasaki KX85, which often offers a slightly broader mid-range, and the Suzuki RM85, known for its torquey motor. The KTM 85 SX, however, often holds an edge in outright power and typically features a more refined, professional-level engine package.
For Features, all Japanese 85s (YZ, KX, RM) offer race-tuned, fully adjustable suspension (KYB for Yamaha, Showa/Kayaba for others) and effective hydraulic disc brakes. The YZ85's YPVS is a key differentiator. The KTM 85 SX often stands out with premium components like a hydraulic clutch, higher-spec WP suspension (though sometimes requiring more specialized setup), and generally more modern chassis geometry that many professional riders prefer. Ergonomics are comparable across the Japanese brands, while KTM often has a distinct feel.
Reliability for all Japanese 85cc bikes is strong, provided proper two-stroke maintenance is diligently followed. This includes regular top-end rebuilds, air filter cleaning, and gear oil changes. The YZ85, KX85, and RM85 are all known for their robust engines and frames. KTMs are also reliable but, being higher-performance, can sometimes demand even more meticulous maintenance and might have slightly pricier parts.
When considering Price, new 2009 Japanese 85s were very similarly priced. Used, the YZ85, KX85, and RM85 typically fall into a similar resale bracket, offering excellent value. The KTM 85 SX, due to its premium components and racing pedigree, generally commands a higher new and used price.
Similar Alternatives:
Better Alternatives (primarily for higher budget/more serious racing):
In terms of Performance, the YZ85 is renowned for its revvy, high-RPM powerband, particularly strong on the top end, thanks in part to its Yamaha Power Valve System (YPVS). It's very competitive with the Kawasaki KX85, which often offers a slightly broader mid-range, and the Suzuki RM85, known for its torquey motor. The KTM 85 SX, however, often holds an edge in outright power and typically features a more refined, professional-level engine package.
For Features, all Japanese 85s (YZ, KX, RM) offer race-tuned, fully adjustable suspension (KYB for Yamaha, Showa/Kayaba for others) and effective hydraulic disc brakes. The YZ85's YPVS is a key differentiator. The KTM 85 SX often stands out with premium components like a hydraulic clutch, higher-spec WP suspension (though sometimes requiring more specialized setup), and generally more modern chassis geometry that many professional riders prefer. Ergonomics are comparable across the Japanese brands, while KTM often has a distinct feel.
Reliability for all Japanese 85cc bikes is strong, provided proper two-stroke maintenance is diligently followed. This includes regular top-end rebuilds, air filter cleaning, and gear oil changes. The YZ85, KX85, and RM85 are all known for their robust engines and frames. KTMs are also reliable but, being higher-performance, can sometimes demand even more meticulous maintenance and might have slightly pricier parts.
When considering Price, new 2009 Japanese 85s were very similarly priced. Used, the YZ85, KX85, and RM85 typically fall into a similar resale bracket, offering excellent value. The KTM 85 SX, due to its premium components and racing pedigree, generally commands a higher new and used price.
Similar Alternatives:
- Kawasaki KX85: An excellent direct rival, offering very similar performance, reliability, and value. Often a choice based on rider preference for power delivery characteristics or ergonomics.
- Suzuki RM85: Another strong contender, known for its strong motor. Like the KX85, it's a solid, reliable choice for a competitive youth rider.
Better Alternatives (primarily for higher budget/more serious racing):
- KTM 85 SX: Often considered the benchmark for 85cc racing, with top-tier performance and components, though at a higher cost for purchase and potentially parts.
- Newer Model YZ85/KX85/RM85: If budget allows, a newer model year from any of these manufacturers will offer incremental improvements in technology, suspension, and engine performance.
Final Verdict: Is the 2009 Yamaha YZ85 a Good Motorcycle?
The 2009 Yamaha YZ85 is an exceptional machine ideal for young, intermediate to advanced riders, typically between 10-15 years old, who are serious about motocross racing or progressing their skills aggressively. Its potent two-stroke engine delivers exhilarating performance, teaching riders critical throttle control and powerband management. Its nimble chassis and adjustable suspension make it a highly capable race bike.
It is absolutely worth buying for its target audience. As a used vehicle, which is the only option for a 2009 model, it offers tremendous value. Buyers should prioritize finding a well-maintained example with a documented service history, particularly concerning top-end rebuilds and suspension care. Avoid bikes that show signs of severe abuse or neglect, as rehabilitation can be costly. There are no specific "trims" to consider for this model year; focus on the overall condition. The YZ85 serves as a fantastic, durable platform for developing future champions, offering a blend of performance and reliability that continues to make it a popular choice in the used market.
It is absolutely worth buying for its target audience. As a used vehicle, which is the only option for a 2009 model, it offers tremendous value. Buyers should prioritize finding a well-maintained example with a documented service history, particularly concerning top-end rebuilds and suspension care. Avoid bikes that show signs of severe abuse or neglect, as rehabilitation can be costly. There are no specific "trims" to consider for this model year; focus on the overall condition. The YZ85 serves as a fantastic, durable platform for developing future champions, offering a blend of performance and reliability that continues to make it a popular choice in the used market.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.