1. Motorcycle Frames Offers
  2. sku: 16767869563528771
  3. YAMAHA 5GS-21190-50-P0

YAMAHA 5GS-21190-50-P0 Rear Frame

fits model: Wr400f, Wr, 400. make: Yamaha. year: 1998–2000.

5gs-21190-50-p0 Yamaha 1998 - 2000 Wr400f Oem Rear Sub Frame Subframe Wr 400

( Manufacturer Part Number: 5GS-21190-50-P0 ), ( Type: Subframe ), ( Placement On Vehicle: Rear )

Review YAMAHA Oem Rear Sub Frame Subframe fits WR400F WR 400 1998–2000

The **Yamaha WR400F (1998-2000 model years) rear frame assembly (part number 5GS-21190-50-P0)** is a meticulously engineered component designed to deliver both performance and durability for this iconic adventure motorcycle. Built to Yamaha s exacting standards, this frame serves as the backbone of the WR400F, a dual-sport bike renowned for its balance of off-road agility and on-road versatility. Crafted from high-strength steel, the frame features a double-cradle design that optimizes weight distribution while maintaining rigidity, ensuring precise handling and responsive steering critical traits for riders tackling everything from rugged trails to paved roads. The rear frame, in particular, integrates seamlessly with the swingarm and rear suspension, contributing to the WR400F s legendary stability and cornering prowess. Its compact yet robust construction allows for a low seat height and a narrow track, enhancing maneuverability in tight spaces and over uneven terrain. Whether you re navigating rocky off-road trails or cruising through urban landscapes, this frame provides the structural integrity needed to withstand the demands of diverse riding conditions. For restoration projects or replacements, this genuine Yamaha part ensures compatibility with the original build quality, making it an essential component for maintaining the WR400F s legendary reputation as a reliable and capable adventure machine.

### **Pros and Cons of Buying a 1998 2000 Yamaha WR400F with a 1998 2000 WR400F Rear Frame (Part Number: 5GS-21190-50-P0)**

#### **Pros**

1. **Proven Reliability** The Yamaha WR400F is a well-regarded off-road motorcycle known for its durability, especially in the late '90s models. Many owners report that these bikes last well beyond 10,000 miles with basic maintenance.

2. **Strong Engine and Performance** The 399cc, air-cooled, single-cylinder engine is simple yet effective, producing around 30 35 horsepower. It s capable of handling light trail riding, enduro, and even some light rock crawling with proper tuning.

3. **Affordable Parts and Maintenance** Being an older model, parts (especially frames, forks, and engines) are widely available and relatively inexpensive compared to newer sport or adventure bikes. Yamaha s reputation for durability means finding replacement components is rarely an issue.

4. **Lightweight and Maneuverable** At around **200 220 lbs (90 100 kg)**, the WR400F is easy to handle, making it ideal for beginners or riders who prefer a nimble, easy-to-transport bike.

5. **Off-Road Capability** The WR400F was designed for trail riding, with a sturdy frame, long-travel suspension (front and rear), and knobby tires. It performs well on dirt roads, light trails, and even some rocky terrain with proper maintenance.

6. **Modularity and Upgrade Potential** The bike s simplicity allows for easy modifications, such as:

- **Engine upgrades** (e.g., larger carburetor, porting, or even a 400cc kit if legal in your region).

- **Suspension upgrades** (e.g., Ohlins or YSS shocks for better trail performance).

- **Exhaust and intake tweaks** for improved power delivery.

- **Frame reinforcement** (if using a spare WR400F frame, it can help with rigidity and durability).

7. **Low Operating Costs** Fuel efficiency is decent for a dirt bike ( 50 70 mpg), and basic maintenance (oil changes, chain adjustments, tire rotations) keeps costs minimal.

8. **Strong Community and Aftermarket Support** There is a dedicated community of WR400F owners and builders who share knowledge, build kits, and aftermarket parts. Forums like **Yamaha WR400F.net** or **DirtBikePlanet** are great resources.

9. **Resale Value** While not a high-value bike, well-maintained WR400Fs hold their value reasonably well, especially if kept in good condition.

10. **Fun and Versatile** The WR400F is a great all-around bike for casual riding, training, or even light competition (e.g., enduro or motocross-style events).

---

#### **Cons**

1. **Age and Wear** Bikes from this era (1998 2000) may have **high mileage** (often 15,000 miles) if not well-maintained. Common wear points include:

- **Worn suspension** (forks and shocks may need replacement).

- **Exhaust header and muffler** (rust and cracks are common).

- **Clutch and flywheel** (may need replacement if slipping).

- **Brake system** (pads, rotors, and calipers degrade over time).

- **Chain and sprocket wear** (requires frequent adjustment and replacement).

2. **Rust and Corrosion** Many bikes from this era suffer from **frame rust**, especially in the **rear frame (5GS-21190-50-P0)** and exhaust system. A thorough inspection is crucial before purchase.

3. **Basic Suspension** The stock suspension is adequate for light trails but may feel **stiff or outdated** compared to modern off-road bikes. Upgrades are often necessary for comfort and performance.

4. **Limited Power for Aggressive Riding** While the WR400F is strong for its class, it lacks the **torque and power** for heavy rock crawling, high-speed enduro, or aggressive motocross. Tuning can help, but it s not a high-performance bike.

5. **Electrical Issues** Older Yamaha models can develop **electrical gremlins**, such as:

- Faulty ignition coils.

- Weak or failing alternators.

- Corroded wiring harnesses.

- Intermittent lighting or starter problems.

6. **Tire Wear** Knobby tires degrade quickly on pavement or rough terrain. Replacing them is a recurring cost.

7. **Fuel System Problems** Carburetors (if not upgraded) can **clog or drift**, leading to poor performance. Modern fuel-injected bikes are more reliable in this regard.

8. **Limited Modern Safety Features** Unlike newer bikes, the WR400F lacks:

- ABS (anti-lock braking).

- Traction control.

- Advanced suspension damping.

- Modern ergonomics (seat height, handlebar position).

9. **Potential Frame Issues** The **rear frame (5GS-21190-50-P0)** is a common upgrade point. While it can reinforce the bike, it may also introduce **stress points** if not properly installed. Ensure the frame is **crack-free and properly welded** before use.

10. **Environmental and Legal Considerations**

- **Smog/Emissions Laws**: In some regions, older bikes may not meet current emissions standards, requiring modifications (e.g., catalytic converter removal).

- **Noise Regulations**: Some areas have strict noise laws; the WR400F s stock exhaust may not pass modern decibel limits.

---

### **Key Inspection Checklist Before Purchase**

Before buying, thoroughly inspect the following:

1. **Frame and Forks**

- Check for **cracks, rust, or bending** in the frame (especially around the rear frame welds).

- Inspect **fork tubes** for dents or corrosion.

- Look for **seals and oil leaks** in the front suspension.

2. **Engine**

- Listen for **knocking, ticking, or unusual noises** (could indicate worn bearings or piston issues).

- Check for **oil leaks** around the crankcase, camshaft cover, or oil filter housing.

- Inspect the **clutch and flywheel** for wear (slipping clutch is a common issue).

3. **Suspension**

- Test **fork compression and rebound** for smoothness (should not feel spongy or stiff).

- Check **rear shock seals** for leaks.

- Measure **fork travel** (should be full; no binding).

4. **Brakes**

- Inspect **rotors and pads** for wear (minimum thickness should be checked).

- Test **brake lever and pedal feel** (should be firm, not spongy).

- Check for **fluid leaks** in the brake lines.

5. **Exhaust and Fuel System**

- Look for **rust or holes** in the exhaust headers and muffler.

- Clean and test the **carburetor** (or fuel injection if upgraded).

- Check for **fuel leaks** or a dirty fuel filter.

6. **Tires and Wheels**

- Inspect **tread depth** (minimum 1/8" for off-road).

- Check for **sidewall damage** or bulges.

- Ensure **wheels are true** (no wobble when spun).

7. **Electrical System**

- Test **lights, turn signals, and horn**.

- Check **battery health** (should hold a charge).

- Inspect **wiring harnesses** for corrosion or fraying.

8. **Chain and Sprockets**

- Measure **chain wear** (should have at least 0.25" of slack).

- Check for **sprocket tooth wear** (should not be rounded).

- Lubricate and adjust properly.

9. **Steering and Handlebars**

- Ensure **steering is smooth** (no binding).

- Check **handlebar clamp bolts** for tightness.

10. **Seat and Ergonomics**

- Test **seat comfort** (should not be cracked or sagging).

- Verify **footpegs and shifters** are secure.

---

### **Conclusion and Recommendation**

#### **Who Should Buy This Bike?**

- **Beginner riders** looking for an affordable, easy-to-maintain off-road bike.

- **Casual trail riders** who enjoy light enduro or recreational riding.

- **Modifiers and builders** who want a **project bike** for upgrades (engine, suspension, frame).

- **Budget-conscious buyers** who prioritize **parts availability and simplicity** over modern technology.

- **Riders who prefer a lightweight, nimble bike** over heavy adventure or sport bikes.

#### **Who Should Avoid This Bike?**

- **Aggressive off-roaders** seeking high-performance rock crawling or motocross.

- **Riders in areas with strict emissions or noise laws

Details:

USED SUB FRAME FROM A 2000 WR400F, IN GOOD CONDITION, THERE IS I TAB REWELDED ON. IF YOU'RE BIKE ISN'T A 2000 WR400F CHECK FITMENT BEFORE BUYING. SHOULD FIT 1998 - 2000 WR400F.

part #: 5gs2119050p0 price

  • $39.00

specifications mocycfra:

  • for models: Wr400f, Wr, 400
  • for makes: Yamaha
  • for years: 1998-2000
  • mpn: 5gs-21190-50-p0
  • type: Subframe
  • placement on vehicle: Rear

seller mocycfra:

  • rating: 100.0%
  • city: Lancaster, Pennsylvania
  • # reviews: 2379

payments mocycfra:

  • wallet: Apple-pay
  • credit card: Discover
  • other

returns mocycfra:

  • policy: No Returns

offer mocycfra:

  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: January 31, 2026

shipping mocycfra:

  • carrier: USPS
  • type: Fixed
  • class: Standard
  • transit: 4-10 Days
  • service: USPS Ground Advantage
  • cost: $24.00

general mocycfra:

  • Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts
  • condition: Used
for models: wr400f, wr, 400, for makes: yamaha, for years: 1998-2000, type: subframe, placement on vehicle: rear,
category: motorcycle parts > motorcycle scooter parts accessories > body frame > frames parts, sku: 16767869563528771,
Yamaha 5GS-21190-50-P0 Is Similar To:
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1 offer $39.00 USD
  • Used. Offer #1 priced at $39.00 + $24.00 shipping estimate = $63.00* total. IF YOU'RE BIKE ISN'T A 2000 WR400F CHECK FITMENT BEFORE BUYING USED SUB FRAME FROM A 2000 WR400F, IN GOOD CONDITION, THERE IS I TAB REWELDED ON.+$24.00 shipping

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