1. Automatic Transmissions Products
  2. sku: 22680573117210711
  3. HONDA 20021-R90-X20

HONDA 20021-R90-X20 Transmission Assy.

fits make: Honda.

20021-r90-x20 Honda Transmission Assy. For

( Manufacturer Part Number: 20021-R90-X20 ), ( Part Type: Transmission )

Review HONDA 2002 1-r90-x20 Transmission Assy.

The **Honda 20021-R90-X20 Transmission** is a high-performance, precision-engineered automatic transmission designed exclusively for Honda s high-output VTEC-tuned engines, particularly those found in the iconic **Honda NSX (R35)** and select **Honda S2000** models. This transmission is a refined evolution of Honda s legendary **Type-R90** automatic, renowned for its seamless shifting, robust durability, and adaptability to aggressive driving styles. Built with a **6-speed sequential automatic** architecture, it delivers lightning-fast, near-instantaneous gear changes while maintaining the smooth, progressive feel that Honda transmissions are celebrated for. The unit features a **torque converter with a lock-up clutch**, allowing for efficient power transfer and improved fuel economy under steady cruising conditions, while its **electronic shift control** ensures precise, driver-responsive gear selection, even under heavy throttle loads.

Under the hood, the **20021-R90-X20** incorporates Honda s advanced **CVT (Continuously Variable Transmission) technology** in a traditional stepped-gear format, optimizing both performance and longevity. The transmission s **aluminum housing** and **high-strength steel components** provide a robust yet lightweight construction, reducing unsprung weight and enhancing handling dynamics critical for high-performance applications. Inside, a **multi-plate wet clutch system** ensures smooth engagement and disengagement of gears, while the **hydraulic valve body** regulates fluid pressure with exceptional accuracy, minimizing shift shocks and maximizing efficiency. The transmission s **sealed, high-capacity fluid system** is designed to withstand the extreme heat generated by high-performance engines, reducing wear and extending service intervals.

One of the standout features of the **20021-R90-X20** is its **adaptive learning capability**, which allows the transmission to "memorize" driver preferences over time, adjusting shift points for optimal performance whether the driver favors quick, sporty shifts or a more relaxed, fuel-efficient progression. This intelligence is managed by Honda s **ECU (Engine Control Unit) integration**, ensuring seamless coordination between the transmission, engine, and drivetrain for a harmonized driving experience. The unit also incorporates **advanced shift solenoids** and **electronic pressure control**, which fine-tune gear engagement for both performance and comfort, making it suitable for both track use and daily driving.

For enthusiasts seeking a **direct replacement or upgrade** for their Honda NSX or S2000, this transmission offers unmatched reliability and performance, often outperforming aftermarket alternatives in terms of shift quality, durability, and compatibility. Whether paired with a stock or modified engine, the **20021-R90-X20** delivers the **smooth, linear shifts** that Honda transmissions are legendary for, while its robust construction ensures it can handle the demands of high-revving, high-torque applications without compromising on longevity. With proper maintenance including regular fluid changes and filter replacements the transmission can easily exceed **100,000 miles**, making it a **cost-effective and high-performance solution** for Honda aficionados who demand both precision and power.

### Pros and Cons of Buying a Honda 20021-R90-X20 Transmission

The **Honda 20021-R90-X20** is a manual transmission commonly used in Honda CR-V (2002 2006) and other models. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Reliability and Durability**

- Honda transmissions are known for their robustness, especially in manual models. The **20021-R90-X20** is designed to handle moderate to heavy loads, making it suitable for daily driving and light towing (when properly equipped).

- With proper maintenance, it can last **150,000 to 250,000 miles** or more, especially in well-driven vehicles.

2. **Availability of Parts and Support**

- Honda transmissions are widely available in the aftermarket, with **OEM and high-quality aftermarket replacements** (e.g., from **Honda, ACDelco, or reputable brands like **Mopar, Genuine Parts Company, or local transmission specialists**).

- Service manuals, repair guides, and diagnostic tools are readily accessible, making repairs easier for mechanics and DIYers.

3. **Compatibility with Modifications**

- The **20021-R90-X20** is compatible with **performance upgrades**, such as:

- **Clutch and flywheel swaps** (e.g., dual-mass flywheel for smoother shifts).

- **Gear ratio modifications** (e.g., lowering gears for better acceleration).

- **Revised shift linkages** for smoother manual operation.

- It works well with **turbocharged or supercharged engines** (e.g., in CR-Vs with forced induction) when properly supported.

4. **Cost-Effective Replacement Option**

- Compared to **automatic transmissions** (e.g., Honda s **20021-R90-X21** or **20021-R90-X22**), manual transmissions are often **cheaper to repair and replace**.

- A **used/refurbished 20021-R90-X20** can cost **$300 $800**, while a **new OEM unit** ranges from **$1,200 $2,000**, making it a budget-friendly choice.

5. **Better Fuel Efficiency**

- Manual transmissions generally offer **slightly better fuel economy** than automatics, especially in stop-and-go traffic where downshifting is more efficient.

6. **Easier to Diagnose and Repair**

- Manual transmissions have **fewer electronic components** than modern automatics, reducing the risk of **computer-related failures**.

- Common issues (e.g., **clutch wear, synchro failure, or gear grinding**) are easier to identify and fix without expensive diagnostic tools.

7. **Classic Honda Build Quality**

- Honda s **precision engineering** ensures that the transmission is **well-balanced and smooth** when properly maintained.

- The **shift linkage and gear engagement** are generally **more responsive** than some competitors manual transmissions.

---

### **Cons**

1. **Higher Maintenance Requirements**

- Unlike automatics, manual transmissions require **regular clutch servicing** (every **60,000 100,000 miles**), including **clutch plate, pressure plate, and throw-out bearing replacement**.

- **Gear oil changes** (every **30,000 50,000 miles**) are crucial to prevent **synchro wear and gear damage**.

2. **Clutch Wear and Replacement Costs**

- The **clutch system** (including **pressure plate, throw-out bearing, and flywheel**) wears out over time and can be **expensive to replace** ($500 $1,200 installed).

- **Dual-mass flywheels (DMFs)** improve smoothness but can fail and are **more costly** than single-mass flywheels.

3. **Potential for Synchro Failure**

- If **gear oil is neglected**, the **synchros (which help smooth gear engagement)** can wear out, leading to **grinding when shifting**.

- Replacing synchros can be **labor-intensive** and costly ($300 $800).

4. **Less Convenience for Some Drivers**

- Not everyone enjoys **manual shifting**, especially in **heavy traffic or long commutes**.

- **Towing or heavy loads** can make shifting **more difficult**, requiring more effort from the driver.

5. **Limited Modern Support**

- While Honda still supports older models, **fewer mechanics specialize in manual transmissions** compared to automatics.

- **Diagnostic tools** for manual transmissions are **less advanced** than those for modern automatics (e.g., no "shift-by-wire" issues, but still requires manual inspection).

6. **Risk of Improper Installation**

- If the transmission is **not properly aligned or lubricated** during installation, it can lead to **premature wear or failure**.

- **Incorrect gear oil type** (e.g., using automatic fluid instead of manual transmission oil) can **void warranties and damage components**.

7. **Potential for Pre-Existing Damage in Used Units**

- When buying a **used/refurbished transmission**, there s a risk of **hidden damage** (e.g., **bent synchros, worn gears, or clutch drag**).

- Always **inspect or have a mechanic test** the transmission before purchasing.

---

### **Common Issues with the 20021-R90-X20**

While generally reliable, some **recurring problems** include:

- **Clutch failure** (most common issue, especially in high-mileage vehicles).

- **Synchro wear** (leading to grinding when shifting).

- **Gear oil leaks** (from seals or gaskets).

- **Shift linkage wear** (causing rough or delayed shifts).

- **Bearing failure** (in the output shaft or input shaft).

---

### **Conclusion & Recommendation**

#### **Who Should Buy the 20021-R90-X20?**

**Best for:**

- **Manual transmission enthusiasts** who enjoy driving a stick shift.

- **Budget-conscious buyers** looking for a **reliable, cost-effective transmission**.

- **DIY mechanics** who can perform **clutch and synchro maintenance**.

- **Owners of Honda CR-Vs (2002 2006) or other compatible models** needing a **direct replacement**.

- **Those who modify their vehicles** (e.g., forced induction, gear swaps).

#### **Who Should Avoid It?**

**Not ideal for:**

- **Drivers who dislike manual transmissions** (automatic may be more convenient).

- **Those who neglect maintenance** (manual transmissions **require more upkeep** than automatics).

- **Heavy towing without proper support** (unless the vehicle is equipped with a **heavy-duty manual transmission**).

- **Buyers who want a "set-and-forget" transmission** (automatics require less frequent servicing).

#### **Final Recommendation:**

If you **value reliability, cost efficiency, and driving engagement**, the **Honda 20021-R90-X20** is an **excellent choice**, especially for **Honda CR-Vs or similar applications**. However, **budget for regular clutch and synchro maintenance** to extend its lifespan.

- **For new installations:** Consider a **new or remanufactured OEM unit** for peace of mind.

- **For used/refurbished units:** **Inspect thoroughly** or have a mechanic **test it before purchase**.

- **For performance builds:** Ensure **proper clutch and gear support** to handle modifications.

**Overall, it s a strong transmission for the right owner just be prepared for slightly more maintenance than an automatic.**

Details:

For Honda: Part Number: 2002 1-R90-X20 Manufacturer: Honda. 2002 1-R90-X20 Transmission Assay. Designed specifically for trucks, trailers, and buses. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle.

Made of high-quality components for durability, reliability, and performance. Manufactured following strict OE standards to work like the original component. Engineered using the latest technology to ensure product lasts longer in service.

part #: 20021r90x20 prices

  • $1750.24-$4449.45

specifications autotransmissionsgo:

  • for makes: Honda
  • mpn: 20021-r90-x20
  • part type: Transmission

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  • condition: New
  • Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

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for makes: honda, part type: transmission,
category: auto parts > car truck parts accessories > transmission drivetrain > automatic transmission, sku: 22680573117210711,
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