YAMAHA 1LN-24710-00 Seat L24

( Manufacturer Part Number: 1LN-24710-00 ), ( Part Type: Seat )

Review YAMAHA Seat Oem L24 fits TT350 TT250 350 1986–1989

The Yamaha TT350 and TT250 models from the late 1980s represent a rare and highly sought-after chapter in motorcycle history, blending raw performance with timeless design in a package that remains as iconic today as it was when it first hit the roads. The **Yamaha 1LN-24710-00 TT350 (1986-1987)** and its smaller sibling, the **TT250 (1989)**, are part of Yamaha s legendary TT-Racer series, originally conceived as competition machines for the Trans-Am TT races but later adapted for street use with a focus on lightweight agility and high-revving excitement. These bikes embody the spirit of the era when Japanese manufacturers were pushing the boundaries of engineering while delivering bikes that were both practical and thrilling to ride.

The TT350, in particular, is a masterclass in minimalist engineering, featuring a **247cc air-cooled, single-cylinder, two-stroke engine** that produces a punchy, high-revving 35 horsepower enough to propel the bike from 0-60 mph in under 4 seconds despite its modest displacement. The engine is a refined evolution of Yamaha s proven TT-Racer designs, with a compact, lightweight crankcase and a single overhead camshaft driving two valves per cylinder for efficient combustion. The **TT350 s transmission** is a smooth-shifting five-speed manual, with a tight, precise clutch that allows for effortless gear changes, while the **chain final drive** ensures a direct and responsive power delivery to the rear wheel. The engine s design is not just about raw power but also about efficiency, with a **wet sump lubrication system** that keeps weight down while ensuring reliable performance.

One of the most striking features of the TT350 is its **aluminum frame**, a departure from the steel frames of the time, which contributed significantly to its lightweight nature weighing in at just **240 pounds fully fueled**, making it one of the nimblest bikes of its era. The frame is a **double-cradle design**, providing a balance of rigidity and flexibility, while the **swingarm** is also aluminum, further reducing weight without compromising durability. The suspension is equally impressive, with **31mm telescopic forks** at the front and a **monoshock rear suspension**, both of which are adjustable to fine-tune the bike s handling characteristics. The **drum brakes** (a holdover from the era before disc brakes became standard) are adequate for the bike s modest power but are often upgraded by modern owners for improved stopping power.

The TT250, introduced in 1989, follows a similar design philosophy but with a **246cc engine** (though often referred to as a 250cc due to displacement variations) that produces a similar high-revving character, albeit with slightly less power. Like its bigger brother, the TT250 features the same **aluminum frame and swingarm**, ensuring a lightweight and agile ride. The **single-cylinder, two-stroke engine** is a refined version of the TT350 s, with a slightly lower compression ratio but still delivering a thrilling exhaust note and a linear powerband that rewards rider input. The **TT250 s suspension and braking systems** mirror those of the TT350, though some later models may have seen minor updates to improve reliability.

Both bikes share a **classic TT-Racer aesthetic**, with a **fiberglass fairing** that wraps around the engine and frame, providing a sleek, aerodynamic profile while keeping weight to a minimum. The **seat** is a simple, contoured unit designed for comfort during long rides, though modern owners often replace it with aftermarket options for improved ergonomics. The **handlebars** are upright and adjustable, allowing for a relaxed or aggressive riding position, while the **footpegs** are positioned for a sporty stance. The **exhaust system** is a single, high-flow unit that not only enhances the bike s distinctive growl but also contributes to its lightweight construction.

The **TT350 and TT250** were designed with the enthusiast in mind, offering a blend of **street-legal practicality and track-inspired performance**. Their **two-stroke engines** are known for their instant throttle response and high-revving nature, making them incredibly fun to ride in both urban and open-road settings. The bikes **minimalist design** with no unnecessary weight or complex electronics ensures that they remain easy to maintain and modify, appealing to both purists and customizers alike. Whether used for daily commuting, weekend rides, or track days, these bikes offer a **raw, unfiltered riding experience** that few modern motorcycles can match.

For collectors and riders today, the TT350 and TT250 are not just motorcycles they are **pieces of automotive history**, representing Yamaha s innovative approach to lightweight, high-performance machines. Their **rare availability** and **timeless appeal** make them highly desirable among vintage motorcycle enthusiasts, with well-maintained examples often commanding premium prices in the classic bike market. Whether you re drawn to their **engineering brilliance, their racing heritage, or simply their ability to turn heads on the road**, these bikes continue to captivate riders who appreciate the art of motorcycle craftsmanship from an era when simplicity and performance were king.

### Pros and Cons of Buying a Yamaha TT350/TT250 from the 1980s

1. **Classic Design and Aesthetics** The Yamaha TT350 and TT250 (1986 1989) feature a timeless, retro-futuristic design that appeals to enthusiasts who appreciate vintage motorcycles. Their streamlined, angular styling remains iconic in the adventure and touring segments.

2. **Reliable and Proven Engineering** Yamaha s TT models were built on a foundation of solid engineering, incorporating features like a telescopic front fork, a rigid rear suspension, and a robust frame. The TT350, in particular, was designed for long-distance touring, making it a practical choice for riders who enjoy extended trips.

3. **Lightweight and Maneuverable** The TT350 weighs around **210 220 kg (460 485 lbs)**, making it relatively light for its class, which improves handling and makes it easier to maneuver in tight spaces or on twisty roads. The TT250 is even lighter, weighing around **190 200 kg (420 440 lbs)**, making it more agile.

4. **Fuel Efficiency** Both models are air-cooled, two-stroke engines (TT350) or four-stroke (TT250), which are known for their fuel efficiency. The TT350, in particular, delivers ** 30 35 km/l (70 80 mpg)** in real-world conditions, making it cost-effective for long-distance riding.

5. **Durability and Longevity** Many Yamaha TT models from this era have proven to be extremely durable, with some still running strong after decades of use. With proper maintenance, these bikes can easily last **200,000 km (125,000 miles)**.

6. **Modification Potential** The TT350 s two-stroke engine is highly modifiable, with aftermarket support for performance upgrades (e.g., high-flow exhaust, porting, or even conversion to four-stroke). The TT250, being a four-stroke, is also tunable but to a lesser extent.

7. **Nostalgia and Collectibility** For riders who appreciate vintage motorcycles, these bikes hold sentimental value. Some models, especially rare or well-preserved examples, can appreciate in value over time, making them attractive to collectors.

8. **Simplicity in Maintenance** Compared to modern bikes, the TT models have straightforward mechanical designs, which can be easier and cheaper to maintain. Many mechanics are familiar with these bikes, and parts are still available (though some may require sourcing from specialty shops).

9. **Touring Capability (TT350)** The TT350 was designed with touring in mind, featuring a comfortable seat, adequate wind protection, and a practical fuel capacity ( 12 liters). Its upright riding position makes it suitable for long rides.

10. **Lower Running Costs** Compared to modern sport-touring bikes, the TT models have lower insurance, registration, and maintenance costs. Fuel and oil expenses are also significantly cheaper.

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1. **Outdated Safety Features** These bikes lack modern safety advancements such as **traction control, ABS, or advanced suspension systems**. The rigid rear suspension and basic telescopic front fork are less forgiving on rough roads compared to modern designs.

2. **Poor Weather Protection** The TT350 and TT250 offer minimal wind protection, with no full fairings or windshields. Riders are exposed to wind, rain, and cold, making long-distance touring uncomfortable in harsh conditions.

3. **Rust and Corrosion Risks** Being older, these bikes may suffer from **rust in the frame, suspension, or exhaust**. The TT350 s two-stroke engine is particularly prone to corrosion if not properly maintained. A thorough inspection is essential before purchase.

4. **Limited Power and Performance**

- **TT350**: The two-stroke engine produces ** 25 30 hp**, which is adequate for cruising but lacks the punch of modern bikes. At higher speeds, it can feel underpowered.

- **TT250**: The four-stroke engine generates ** 20 25 hp**, making it slower and less capable on highways or in windy conditions.

Both models struggle with **top-end speed** (max 130 140 km/h or 80 87 mph) and acceleration compared to modern standards.

5. **Poor Fuel Economy at High Speeds** While the TT350 is fuel-efficient at cruising speeds, it becomes **thirsty at higher RPMs**, reducing real-world efficiency on long trips.

6. **Discomfort on Long Rides** The ergonomics of these bikes are not optimized for extended touring. The **upright riding position** can lead to fatigue, and the lack of suspension travel makes rough roads uncomfortable.

7. **Parts Availability and Costs** While basic parts are still available, **specialty components (e.g., OEM suspension, electrical parts, or rare engine components)** can be difficult and expensive to source. Some aftermarket support exists, but it may not be as extensive as for newer models.

8. **Emissions and Legal Restrictions** In many countries, **two-stroke engines (like the TT350) are banned or heavily restricted** due to emissions regulations. The TT250 (four-stroke) may face fewer issues but could still require modifications to meet modern standards.

9. **Resale Value** Unlike modern bikes, these Yamaha TT models do not hold significant resale value. They are primarily bought for nostalgia or as project bikes rather than as long-term investments.

10. **Maintenance Challenges**

- **Two-stroke engines (TT350)** require **fresh oil mixing with fuel**, adding complexity to maintenance.

- **Electrical systems** (lights, ignition) may be outdated and prone to failure.

- **Suspension and brakes** are basic and may need frequent adjustments or upgrades.

11. **Rider Skill Dependency** These bikes reward **skilled, confident riding**. Their light weight and minimal stability aids mean they can be **tippy at low speeds** and require careful handling, especially in traffic or on uneven surfaces.

12. **Limited Modern Comforts** No **digital instruments, Bluetooth connectivity, or advanced rider aids** (e.g., cruise control, traction control). Riders must rely on analog gauges and manual adjustments.

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Buying a **Yamaha TT350 (1986 1987) or TT250 (1989)** is a **great choice for enthusiasts who prioritize nostalgia, simplicity, and adventure riding** especially if you enjoy **long-distance cruising, mechanical tinkering, or collecting vintage bikes**. These motorcycles offer **reliability, lightweight handling, and a unique riding experience** that modern bikes cannot replicate.

However, they are **not ideal for riders seeking performance, safety, or comfort**. The **lack of modern amenities, poor weather protection, and maintenance challenges** make them less suitable for daily use or those who prefer a more refined riding experience.

If you are **mechanically inclined, willing to invest time in maintenance, and don t mind the limitations**, a well-preserved TT350 or TT250 can be an **excellent and rewarding purchase**. If you prefer **modern safety, power, and convenience**, a newer adventure-touring bike (e.g., BMW R nineT, Honda Africa Twin, or Royal Enfield Super Meteor) would be a better fit.

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- You love **vintage motorcycles** and enjoy the **challenge of maintaining an older bike**.

- You plan to **ride short to medium distances** on well-paved roads.

- You are **comfortable with basic mechanical work** and don t mind occasional repairs.

- You appreciate the **lightweight, nimble handling** and don t need high speeds or advanced features.

- You find the **aesthetic and historical value** worth the trade-offs.

- You prioritize **safety, comfort, and modern technology** (ABS, traction control, etc.).

- You frequently ride in **bad weather or rough terrain**.

- You expect **high performance, fuel efficiency at high speeds, or long-distance touring comfort**.

- You are **not mechanically inclined** and cannot commit to regular maintenance.

- You live in a region where **two-stroke bikes are restricted or difficult to register**.

For the right rider, a **Yamaha TT350 or TT250 is a fantastic choice** a blend of **simplicity, adventure, and nostalgia**. However, it requires **realistic expectations and a willingness to embrace its limitations**. If you re drawn to its **retro charm and love working on bikes**, go for it. If you want a **modern, hassle-free riding experience**, consider a newer model instead.

Details:

part #: 1ln2471000 prices

• $65.00-$126.34

specifications cyclevintagee:

• for models: Tt350, Tt250, 350
• for makes: Yamaha
• for years: 1986-1989
• mpn: 1ln-24710-00
• part type: Seat

returns cyclevintagee:

• policy: No Returns

shipping cyclevintagee:

• cost: $8.81
• transit: 5-10 Days
• carrier: USPS
• type: Calculated
• class: Standard
• service: USPS Ground Advantage

offer cyclevintagee:

• availability: In Stock
• started: April 22, 2026
• sold: 0
• best offers: True
• options: Ship-to-home
• quantity: 1

seller cyclevintagee:

• city: Orange, California
• rating: 100.0%
• # reviews: 9

payments cyclevintagee:

• other
• money order
• credit card: Visa
• wallet: Paypal

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

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