BMW 46638520277 Rear Chassis Seat Rail Undertail Tray

( Manufacturer Part Number: 46638520277 ), ( Part Type: Tray Seat )

Review BMW Subframe Rear Sub Chassis Seat Rail Undertail Tray fits R1200 R1200RT 2014–2018

The **BMW R 1200 RT (2015 2018) Rear Chassis Seat Rail Undertail Tray (Part #46638520277)** is a precision-engineered aftermarket component designed specifically for BMW s iconic boxer-twin motorcycle, ensuring both functionality and aesthetic refinement. This undertail tray is crafted to seamlessly integrate with the rear chassis section of the R 1200 RT, providing a sturdy and protective barrier beneath the seat rail assembly while enhancing the bike s sleek, streamlined appearance. Constructed from high-quality, durable materials likely reinforced polymer or composite this tray is engineered to withstand the rigors of daily riding, offering resistance against road debris, moisture, and minor impacts that could otherwise compromise the bike s structural integrity. Its design aligns perfectly with the R 1200 RT s underseat area, bridging the gap between the seat rail and the undertail, which not only improves the bike s aerodynamics but also prevents dirt, water, and small stones from accumulating in critical mechanical zones. For riders who prioritize both performance and presentation, this tray serves as an elegant solution, maintaining the motorcycle s clean, aggressive stance while contributing to a more polished, finished look. Whether installed as part of a full underseat upgrade or as a standalone enhancement, this component exemplifies BMW s attention to detail, ensuring that every element of the R 1200 RT s design functional or cosmetic contributes to an uncompromising riding experience.

### **Pros and Cons of Buying a 2015 BMW R 1200 RT (Chassis #46638520277, Mileage 14-18k km)**

#### **Pros**

1. **Reliability and Build Quality**

The BMW R 1200 RT is widely regarded as one of the most reliable and well-built motorcycles in its class. The 1,202cc inline-four engine is robust, with a reputation for lasting well beyond 20,000 km if properly maintained. The chassis is constructed from high-strength steel, ensuring durability and stability.

2. **Comfort and Ergonomics**

The R 1200 RT is designed for long-distance touring, offering a comfortable riding position with adjustable seat and handlebar options. The ergonomics are well-suited for both casual riders and those who frequently travel long distances.

3. **Performance and Power**

The engine produces **136 hp (101 kW) and 125 Nm of torque**, delivering strong acceleration and a smooth power delivery. The six-speed transmission is smooth, and the bike handles well at highway speeds. The RT variant includes a **trail package**, which improves off-road capability compared to the standard R 1200 GS.

4. **Touring Features**

- **Undertail tray** (for additional storage)

- **Rear chassis seat rail** (for optional windscreen or luggage)

- **Comfortable seat** (adjustable in some models)

- **Adjustable suspension** (for different riding conditions)

- **LED lighting** (improved visibility)

The **2015 model** also includes **Bluetooth connectivity** (via BMW Motorrad Connect), allowing for hands-free calling and media control.

5. **Resale Value**

BMW motorcycles, especially well-maintained R 1200 models, retain their value well. A 2015 RT in low mileage (14-18k km) should still command a strong resale price, especially if it has a clean service history.

6. **Maintenance and Support**

BMW has a global network of dealerships, making servicing and parts replacement straightforward. The bike s complexity is manageable, and many mechanics are familiar with BMW s systems.

7. **Versatility**

The R 1200 RT is suitable for **road riding, light off-roading, and touring**. The trail package helps with rougher terrain, while the comfortable setup makes it ideal for long journeys.

---

#### **Cons**

1. **High Initial Cost**

Even at low mileage, a **2015 BMW R 1200 RT** will be expensive to purchase. Used prices for such a bike typically range between **$18,000 and $25,000 USD**, depending on condition, location, and additional features.

2. **Maintenance Expenses**

BMW motorcycles require **regular, high-quality servicing**. Oil changes, valve adjustments, and other maintenance tasks can be costly. The **six-cylinder engine** is more complex than a standard twin or single-cylinder bike, leading to higher repair bills if issues arise.

3. **Weight**

The R 1200 RT weighs around **230 kg (507 lbs) wet**, making it one of the heavier bikes in its class. This can affect maneuverability in tight spaces and may require more effort to handle at low speeds.

4. **Fuel Consumption**

The bike has a **moderate fuel economy** for its class, consuming around **5.5-6.5 L/100 km** in mixed riding. While not excessive, it is higher than smaller displacement bikes.

5. **Complexity**

The **electronic systems (BS6, ABS, traction control, etc.)** add layers of complexity. While convenient, these systems can be finicky and may require professional diagnosis if they malfunction.

6. **Depreciation Over Time**

While BMWs hold value well, they still depreciate. If you plan to keep the bike long-term, the initial cost may be a significant investment.

7. **Potential for Hidden Issues**

Even at low mileage, **2015 models** may have **minor wear and tear** (e.g., brake pads, suspension seals, or minor electrical gremlins). A **pre-purchase inspection (PPI)** is highly recommended to avoid unexpected repairs.

---

### **Conclusion**

The **2015 BMW R 1200 RT (Chassis #46638520277, 14-18k km)** is an **excellent choice** for riders seeking a **reliable, comfortable, and versatile touring bike** with strong performance. Its **low mileage** suggests it has been well-maintained, and the **Touring Package** makes it ideal for long-distance riding.

However, the **high purchase and maintenance costs** are significant drawbacks. If budget is a concern, a **used R 1200 GS or R 1250 GS** (which are slightly more off-road capable) might be a better alternative. Alternatively, if you prioritize **performance over touring**, a **used R 1200 GS Adventure** could be a more balanced option.

### **Recommendation**

- You have a **budget for a premium motorcycle** and can afford maintenance.

- You prioritize **comfort, reliability, and touring capability**.

- You want a **well-rounded bike** that handles both road and light off-road conditions.

- The bike has a **clean service history** (request maintenance records).

- You are **price-sensitive** and cannot justify the cost.

- You prefer **lighter or simpler bikes** (e.g., a twin-cylinder or single-cylinder motorcycle).

- You plan to **modify the bike heavily**, as BMW s warranty and resale value may be affected.

**Final Verdict:** This **2015 BMW R 1200 RT** is a **strong purchase** for the right buyer one who values **BMW s build quality, touring features, and long-term reliability**. Just ensure you **inspect it thoroughly** and **budget for future maintenance** before committing.

Details:

OFFICE USE: LTR-DH 03/26 15BMWR1200RT-193475.

part #: 46638520277 prices

• $49.05-$102.29

specifications mocycfra:

• for models: R1200, R1200rt
• for makes: Bmw
• for years: 2014-2018
• mpn: 46638520277
• part type: Tray Seat

shipping mocycfra:

• cost: $225.37
• transit: 3-7 Days
• type: Calculated
• carrier: UPS
• service: UPS Ground
• class: Standard

returns mocycfra:

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

payments mocycfra:

• wallet: Google-pay
• other
• cash
• credit card: Diners-club

seller mocycfra:

• # reviews: 91605
• rating: 100.0%
• city: Anaheim, California

general mocycfra:

• condition: Used
• Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts

offer mocycfra:

• options: Ship-to-home
• sold: 0
• started: March 10, 2026
• quantity: 1
• availability: In Stock

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