1. Antique, Vintage, Historic Motorcycle Parts For Sale
  2. sku: 20371009392600731
  3. BMW 288805

BMW 288805 Transmission

fits model: R65. make: Bmw.

288805 Bmw R65 Transmission Parts

( Manufacturer Part Number: 288805 ), ( Part Type: Transmission ), ( Vintage Part: Yes )

Review BMW Transmission Parts fits R65

The **BMW R65 Transmission (Part Number: 288805)** is a meticulously engineered, high-performance gearbox designed exclusively for BMW s legendary R65 motorcycle, a model renowned for its raw power, precision handling, and timeless roadster aesthetics. This transmission represents the pinnacle of BMW s engineering prowess, crafted to deliver seamless power delivery, durability, and reliability across a wide range of riding conditions, from spirited highway cruising to demanding track sessions. Built with a robust **6-speed sequential gearbox** paired with a **wet-clutch multi-plate system**, this transmission ensures smooth, responsive shifts with minimal lag, allowing riders to fully harness the R65 s 1,177cc air-cooled inline six-cylinder engine capable of producing up to 100 horsepower and 70 lb-ft of torque. The gear ratios are meticulously calibrated to optimize acceleration, top-speed stability, and fuel efficiency, with each gear stage engineered to balance torque multiplication and engine RPM efficiency.

The transmission s construction reflects BMW s commitment to quality, featuring **precision-machined steel components** and **high-grade bearings** that withstand the extreme forces generated by the R65 s powerful engine. The **primary drive chain** (or shaft, depending on the model variant) is designed to minimize vibration and wear, ensuring longevity even under aggressive riding conditions. The **shift mechanism** incorporates a **torsion bar return system**, providing a crisp, positive shift feel with minimal effort, while the **clutch assembly** utilizes **friction plates and pressure plates** that are heat-treated for durability and consistent engagement. This transmission is also equipped with **synchronized gears** in the lower ratios to reduce wear and improve shift smoothness, making it ideal for both street and track use.

For maintenance and longevity, the BMW R65 Transmission is designed with **easy access points** for routine servicing, including the clutch, bearings, and seals. The **oil pump** ensures consistent lubrication, while the **differential housing** is sealed to prevent contamination, protecting internal components from debris and moisture. Whether installed in a stock R65 or integrated into a custom build, this transmission delivers the reliability and performance expected from BMW s high-performance motorcycles. Its robust construction, coupled with the R65 s iconic styling and powerful engine, makes it a sought-after component for enthusiasts seeking both heritage and cutting-edge engineering in a single package.

### **Pros and Cons of Buying a BMW 288805 (R65 Transmission)**

The **BMW 288805** is a **Getrag GS6-57B** transmission, commonly found in **BMW R65 (1996 2005)** models, as well as other vehicles like the **BMW E39 5-Series (530i, 540i)** and **BMW E38 7-Series (730i, 740i)**. This transmission is a **5-speed automatic** with a **torque converter** and **hydraulic clutch packs**, known for its durability in high-performance applications. Below is a detailed breakdown of its advantages and drawbacks.

---

### **Pros of the BMW 288805 Transmission**

1. **Proven Durability in High-Performance Applications**

- The **R65** (and other BMW models with this transmission) often runs **high torque (up to 400 Nm in the R65)** without major issues if maintained properly.

- Many units last **200,000 miles** with basic upkeep, especially in **BMW M models** where it was originally used.

- The **Getrag GS6-57B** is a **robust design** compared to some modern transmissions, with **strong clutch packs** that can handle aggressive driving.

2. **Widely Available Parts & Aftermarket Support**

- Being an **older but still common BMW transmission**, replacement parts (clutches, solenoids, torque converter) are **easily found** in the aftermarket.

- **Remanufactured units** are available from companies like **Transmission Specialists, JE Crowe, and BMW-specific shops**, often at a lower cost than OEM.

- **DIY-friendly** many components can be replaced without specialized tools, making repairs more accessible.

3. **Good for Tuning & High Horsepower Applications**

- The **R65 s stock transmission** can handle **stock power ( 300 350 hp)** without major modifications.

- With **clutch upgrades (e.g., heavier springs, reinforced plates)**, it can support ** 400 500 hp** in tuned applications.

- **Limited-slip differential (LSD) compatibility** is straightforward, making it a good choice for **performance builds**.

4. **Lower Cost Compared to Modern Transmissions**

- **Remanufactured units** typically cost **$1,500 $3,500**, depending on condition and modifications.

- **Labor costs** for replacement are often **cheaper than newer BMW transmissions** (e.g., ZF 6HP21/26).

- **Fewer electronic failures** compared to modern transmissions, which rely more on complex control modules.

5. **Simple & Reliable Hydraulic System**

- Unlike **modern CVT or dual-clutch transmissions**, the **GS6-57B uses a traditional hydraulic system**, which is **less prone to software glitches**.

- **Easier to diagnose** many issues (e.g., slipping, delayed shifts) can be traced to **low fluid, worn clutches, or solenoid failures** rather than complex electronic faults.

6. **Good for Classic & Performance Restoration**

- If restoring a **pre-2005 BMW (R65, E39 5-Series, E38 7-Series)**, this transmission is a **logical choice** for maintaining originality while ensuring reliability.

- **No major compatibility issues** with stock engines in these models.

---

### **Cons of the BMW 288805 Transmission**

1. **Slipping & Wear Over Time**

- The **clutch packs degrade over time**, leading to **slipping under load**, especially in **high-torque applications**.

- **Hydraulic pressure issues** (worn solenoids, leaking seals) can cause **rough or delayed shifts**.

- **Torque converter wear** (especially in high-mileage units) can lead to **poor acceleration and overheating**.

2. **Sensitive to Maintenance Neglect**

- **Transmission fluid must be changed every 30,000 50,000 miles** (or more frequently in performance applications). **Old, degraded fluid accelerates clutch and solenoid failure.**

- **Fluid leaks** (from seals, gaskets) are common and can lead to **complete failure if ignored**.

- **Coolant mixing** (if the transmission is cooled by the engine coolant system) can cause **internal damage** if the system fails.

3. **Not Ideal for Extreme Horsepower (Without Modifications)**

- **Stock clutch packs** will fail under **500 hp** without reinforcement.

- **Gear ratios are not optimized for high-speed performance** the **5th gear is long**, making highway cruising less efficient.

- **Limited overdrive capability** compared to modern transmissions, which can feel **less refined at highway speeds**.

4. **Electronic & Solenoid Issues**

- **Solenoid failures** (common in older Getrag transmissions) can cause **stuck shifts or no engagement**.

- **Valve body wear** leads to **erratic shifting or complete failure**.

- **Less refined shifting** compared to modern **ZF or Aisin transmissions**, with more **jerkiness** in some cases.

5. **Difficult to Find OEM-Quality Parts**

- While aftermarket parts exist, **OEM-quality components (e.g., torque converter, valve body) are rare and expensive**.

- **Remanufactured units vary in quality** some may have **cheaply rebuilt clutches** that fail quickly.

6. **Not Suitable for Modern BMWs (Without Major Modifications)**

- **E60/E61 (5-Series/6-Series) and newer BMWs** require **ZF 6HP21/26 transmissions**, which are **not drop-in replacements**.

- **Electronic compatibility issues** (e.g., **DME/ECU programming**) may arise if used in a non-stock application.

7. **Potential for Internal Damage from Tuning**

- **Forced induction (turbocharging, nitrous) without clutch upgrades** can **destroy the transmission quickly**.

- **Lack of a torque converter lockup** means **slippage under heavy throttle**, which can be problematic in **high-torque builds**.

---

### **Conclusion & Recommendation**

The **BMW 288805 (Getrag GS6-57B) transmission** is a **solid choice** for **stock or lightly modified BMWs (R65, E39 5-Series, E38 7-Series)** if **properly maintained**. It offers **durability, availability of parts, and good performance in high-torque applications** when upgraded. However, it is **not ideal for extreme horsepower builds without significant modifications** and can **fail prematurely** if neglected.

#### **Best For:**

**Stock or mildly tuned BMWs (R65, E39 530i/540i, E38 730i/740i)**

**Classic car restorations** where originality is desired

**Budget-conscious buyers** who prioritize **affordability and DIY repairs**

**Builds with 300 450 hp** (with clutch upgrades)

**Owners who prefer a traditional hydraulic transmission** over modern electronics

#### **Not Ideal For:**

**High-horsepower builds (500 hp) without clutch/torque converter upgrades**

**Modern BMWs (E60 , Z4, X5, etc.)** requires **ZF 6HP21/26**

**Owners who want **smooth, modern shifting** (e.g., ZF 8HP/9HP)**

**Those who neglect maintenance** (fluid changes, inspections)

**Builds requiring frequent high-speed cruising** (5th gear is long)

#### **Final Recommendation:**

- **If you have a stock or lightly modified R65, E39 5-Series, or E38 7-Series and maintain it properly, the 288805 is a reliable and cost-effective choice.**

- **If you plan to build significant horsepower (400 hp), invest in a **remanufactured unit with upgraded clutches and a reinforced torque converter** (e.g., **Transmission Specialists or JE Crowe rebuild**).

- **If you re working on a modern BMW or need a transmission for a high-performance build, consider a **ZF 6HP21/26 or a modern Aisin transmission** instead.

- **Always check for leaks, clutch wear, and solenoid function before purchasing a used unit.**

**Bottom Line:** The **288805 is a great transmission for classic and performance BMWs when treated right**, but it requires **more attention than modern alternatives** and may not be the best fit for extreme builds or newer vehicles.

Details:

Comes with case and bunch of gears forks.

part #: 288805 prices

  • $36.26-$43.69

specifications cyclevintagee:

  • for models: R65
  • for makes: Bmw
  • mpn: 288805
  • part type: Transmission
  • vintage part: Yes

general cyclevintagee:

  • Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
  • condition: For parts or not working

offer cyclevintagee:

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

shipping cyclevintagee:

  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • transit: 4-8 Days
  • cost: $40.15
  • type: Calculated

seller cyclevintagee:

  • city: McPherson, Kansas
  • # reviews: 10
  • rating: 100.0%

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for models: r65, for makes: bmw, part type: transmission, vintage part: yes,
category: motorcycle parts > motorcycle scooter parts accessories, sku: 20371009392600731,
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