YAMAHA 509-25351-00 Rear Brake Camshaft Dt Atvs

( Manufacturer Part Number: 509-25351-00 ), ( Part Type: Brake Camshaft ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: J8 Crp1-n Buk 39 Bin 7 )

Review YAMAHA Oem Rear Brake Camshaft Dt Atvs fits MX YZ XT 1971–1990

The **Yamaha 509-25351-00 Rear Brake Camshaft** is a meticulously engineered component designed exclusively for Yamaha ATVs produced between **1971 and 1990**, including models such as the **DT, MX, and XT series**. This high-performance part plays a critical role in the braking system, ensuring precise modulation and reliable stopping power while maintaining durability under demanding off-road conditions. Crafted from premium materials, the camshaft features a robust construction with finely machined surfaces to optimize hydraulic pressure and brake pad engagement, reducing wear on both the caliper and rotor. Its unique design integrates a smooth, progressive cam profile that enhances responsiveness, allowing riders to achieve consistent braking performance whether navigating tight trails, steep descents, or rough terrain. Compatible with a wide range of Yamaha ATVs from the classic era, this aftermarket part is ideal for restorers, collectors, and enthusiasts seeking to restore or upgrade their vehicle s braking system to factory specifications or beyond. Whether replacing a worn-out original component or enhancing performance in a modified rig, the **509-25351-00** delivers the precision and reliability expected from Yamaha s legendary engineering bridging the gap between vintage craftsmanship and modern off-road demands.

### Pros and Cons of Buying a Yamaha 509-25351-00 (1971 1990 Rear Brake Camshaft DT/XT/YZ ATV)

#### **Pros**

1. **Classic and Reliable Design** Yamaha s early ATVs (1970s early 1990s) were built with durable, straightforward mechanics. The DT/XT/YZ series were among the first mass-produced ATVs, and many were designed for off-road durability, making them a solid choice for riders who appreciate simplicity and ruggedness.

2. **Proven Engine** The air-cooled, single-cylinder engines in these models (typically 90cc 125cc) were known for their longevity if properly maintained. Many still run reliably today with basic upkeep, and parts are widely available.

3. **Off-Road Capability** These ATVs were designed for rough terrain, with high ground clearance, knobby tires, and a sturdy frame. They handle trails, farms, and light utility work well, making them ideal for riders who prioritize off-road performance over speed or comfort.

4. **Lower Cost of Ownership** Compared to modern ATVs, these older models are significantly cheaper to purchase. Fuel efficiency is also better (expect 100 150 mpg), and basic repairs (e.g., chain, brakes, tires) are affordable. Labor costs are minimal since mechanics familiar with vintage ATVs are often willing to work on them.

5. **Modding Potential** The simplicity of these ATVs makes them great candidates for DIY modifications. Upgrades like exhausts, suspension tuning, or engine swaps (e.g., replacing the stock engine with a more powerful one) are relatively straightforward for experienced builders.

6. **Nostalgia and Community** Owning a classic Yamaha ATV connects you to a niche but passionate community. Many enthusiasts restore and modify these machines, and there are forums, meetups, and aftermarket parts specifically for these models.

7. **Lightweight and Maneuverable** Early ATVs were smaller and lighter than modern models, making them easier to handle in tight spaces, on steep hills, or in crowded areas. This can be an advantage for utility work or recreational riding in confined areas.

8. **Minimal Electronics** Unlike modern ATVs with complex electronics, these models have basic mechanical systems (no ECUs, sensors, or computer-controlled components). This reduces the risk of electronic failures and makes troubleshooting easier.

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#### **Cons**

1. **Age-Related Wear and Tear** Even well-maintained ATVs from this era will show signs of aging, such as rust, worn suspension, or degraded rubber components (e.g., hoses, seals). Buyers should expect to invest time and money in restoration or replacement parts.

2. **Limited Power and Speed** The engines in these models are underpowered by today s standards, with top speeds rarely exceeding 40 50 mph (64 80 km/h). This can be frustrating for riders who want higher performance or faster trail times.

3. **Poor Ergonomics and Comfort** Early ATVs lack modern comfort features like adjustable seats, suspension tuning, or vibration dampening. Riding for long periods can be uncomfortable, especially on rough terrain.

4. **Safety Concerns** Modern ATVs come with roll cages, disc brakes, and improved stability features. Older models often lack these, increasing the risk of injury in rollovers or high-speed accidents. Helmets, gloves, and proper riding gear are essential but not always enough for these machines.

5. **Parts Availability Can Be Hit-or-Miss** While basic parts (tires, chains, brakes) are easy to find, more specialized components (e.g., rare OEM parts, aftermarket upgrades) may require sourcing from vintage or online specialty stores. Some parts may no longer be manufactured.

6. **Fuel and Emissions Issues** Older ATVs often run on leaded fuel (if they still use it), which can damage modern engines if accidentally mixed. Additionally, they don t meet modern emissions standards, so they can t be legally ridden in areas with strict environmental regulations.

7. **Resale Value** Classic ATVs hold value for enthusiasts, but they depreciate quickly for non-collectors. If you plan to sell later, the market is niche, and prices may not recover well unless the ATV is in pristine condition.

8. **Maintenance Requirements** These ATVs require more frequent maintenance than modern models. Regular tasks like chain lubrication, brake adjustments, and engine tune-ups are critical to prevent breakdowns. Rust prevention (especially in wet climates) is also a year-round concern.

9. **Limited Aftermarket Support** While there is a dedicated aftermarket for vintage ATVs, it s not as extensive as for modern machines. Finding compatible upgrades (e.g., suspension, exhaust) may require creativity or custom fabrication.

10. **Legal Restrictions** Some jurisdictions have age or weight restrictions for ATVs, and older models may not meet current safety standards. Always check local regulations before purchasing.

---

### **Conclusion**

The Yamaha 509-25351-00 (1971 1990 DT/XT/YZ) ATV is a fantastic choice for riders who appreciate **simplicity, durability, and off-road capability** but only if they are prepared for the challenges of owning a vintage machine. These ATVs excel in **utility, modding potential, and community appeal**, making them ideal for hobbyists, collectors, or those who enjoy the hands-on aspect of maintenance. However, they are **not suitable** for riders seeking **high performance, modern comfort, or low-maintenance convenience**.

If you re looking for a **reliable, low-cost, and character-rich** ATV for trail riding, farm work, or restoration projects, this model is a great investment. But if you prioritize **speed, safety, or ease of use**, a modern ATV would be a better fit.

---

### **Recommendation**

- You enjoy **DIY maintenance and restoration**.

- You want a **budget-friendly, off-road-capable** machine for utility or recreational use.

- You re part of or interested in the **vintage ATV community**.

- You plan to **modify or customize** the ATV to suit your needs.

- You don t mind **lower comfort and performance** in exchange for simplicity and durability.

- You need **high speed, modern safety features, or comfort**.

- You re not willing to **invest time in maintenance and repairs**.

- You live in an area with **strict emissions or noise regulations**.

- You want a **low-maintenance, plug-and-play** machine for daily use.

**Final Tip:** Always **inspect the ATV thoroughly** before purchasing check for rust, engine condition, suspension integrity, and brake functionality. Consider buying from a **reputable seller** who provides a history of maintenance. If possible, test-ride the ATV to ensure it s in safe, rideable condition.

Details:

This critical component actuates the brake shoes within drum, ensuring effective rear braking performance on many vintage Yamaha model's. Kawasaki MX / ATV. Fits: Fits 1971-1990 Yamaha motorcycles and ATVs equipped with rear drum brakes, including various DT, MX, YZ, XT, YFM model's. Genuine Yamaha OEM rear brake camshaft, part number 509-25351-00.

The image to watch on YouTube. Honda MX / ATV. Spotlight: A Day Inside . Yamaha MX / ATV.

Suzuki MX / ATV.

part #: 5092535100 prices

• $17.95-$24.99

specifications cyclebrakeshoe:

• for models: Mx, Yz, Xt
• for makes: Yamaha
• for years: 1971-1990
• mpn: 509-25351-00
• part type: Brake Camshaft
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: J8 Crp1-n Buk 39 Bin 7

offer cyclebrakeshoe:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• sold: 0
• started: February 11, 2026
• quantity: 1

returns cyclebrakeshoe:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

shipping cyclebrakeshoe:

• class: Standard, Expedited, One-day
• carrier: USPS, FedEx
• transit: 3-8 Days
• cost: $0.00
• type: Fixed
• service: USPS Ground Advantage, USPS Priority Mail, FedEx 2Day, Overnight

payments cyclebrakeshoe:

• wallet: Paypal
• other
• credit card: Discover

seller cyclebrakeshoe:

• # reviews: 209654
• city: Odessa, Florida
• rating: 99.3%

general cyclebrakeshoe:

• Motorcycle Scooter Parts Accessories > Brakes Brake Parts > Brake Shoes
• condition: New other see details

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