YAMAHA Rear Structure 2S2-21190-00-00.

( Manufacturer Part Number: 2S2-21190-00-00 ), ( Frame Type: Rigid ), ( Machine Type: Off-road Motorcycle ), ( Color: Silver ), ( Material: Aluminum ), ( Vintage Part: No ), ( Placement On Vehicle: Rear ), ( Type: Subframe ), ( Finish: Polished )

Review YAMAHA 2s2-21190-00-00. Aluminum Rear Subframe Structure fits YZ250F YZ450F 2006–2009

The **Yamaha YZ250F/YZ450F Rear Structure (Part #2S2-2-1190-00-00)** is a precision-engineered component designed exclusively for Yamaha s high-performance off-road motorcycles produced between the model years 2006 and 2009. This rear structure serves as the foundational backbone of the bike s rear suspension system, housing critical elements such as the shock absorber mount, swingarm pivot, and rear subframe connections. Crafted from high-strength steel, this component is forged to withstand the extreme forces generated during aggressive riding, including hard cornering, wheel hop, and high-speed impacts. The design incorporates a robust, heat-treated frame with carefully machined surfaces to ensure optimal alignment and durability, reducing the risk of fatigue or deformation under prolonged stress. The rear structure also integrates with the bike s exhaust system, providing secure mounting points for the muffler and heat shields while maintaining structural integrity. Its modular construction allows for easy installation and removal, making maintenance and repairs more accessible for mechanics and enthusiasts alike. Whether used in stock applications or as part of a custom build, this rear structure is essential for preserving the handling dynamics and reliability of the YZ250F and YZ450F, ensuring they deliver the performance and responsiveness Yamaha is renowned for in the motocross and enduro arenas.

### **Pros and Cons of buying a Yamaha YZ250F/YZ450F Rear Structure (Part #2S2-2-21190-00-00, 2006 2009 Models)**

1. **High Quality and Durability** Yamaha s rear subframe and swingarm assembly is known for its robust construction, designed to handle the stresses of off-road riding. The materials and welding are generally reliable for the lifespan of the bike.

2. **Direct Fitment** This part is designed specifically for the 2006 2009 YZ250F and YZ450F models, ensuring compatibility without modifications. It includes the rear subframe, swingarm, and associated mounting points, simplifying installation.

3. **Aftermarket Support** Yamaha s components are widely used in the off-road community, meaning you ll find replacement parts, upgrades (e.g., aftermarket shocks, bushings), and repair guides easily.

4. **Rust Resistance** While not entirely rust-proof, Yamaha s construction tends to hold up better than some competitors, especially if the bike was stored properly. The swingarm and subframe are typically made from steel, which is more durable than aluminum in extreme conditions.

5. **Easier Maintenance Access** A solid rear structure can make it simpler to work on the rear suspension, exhaust, and drivetrain, depending on the bike s design.

6. **Resale Value** If you ever decide to sell or upgrade, a well-maintained Yamaha rear structure retains value better than some aftermarket alternatives.

7. **Compatibility with Upgrades** Many aftermarket swingarm extensions, stiffer arms, or custom subframe mounts are designed to work with Yamaha s stock geometry, making it easier to modify the bike later.

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1. **Potential Rust Issues** If the bike was stored in wet or harsh conditions, the rear structure (especially the swingarm) may have developed rust. Inspecting for pitting, cracks, or weakened welds is critical before purchasing.

2. **Aging Design** The 2006 2009 models predated some modern advancements in off-road bike design (e.g., lighter materials, improved suspension tuning). The rear structure may feel heavier or less refined compared to newer bikes.

3. **Limited Customization** Unlike some aftermarket swingarms or subframes, Yamaha s stock parts are not designed for extreme modifications (e.g., aggressive wheel offsets or extreme suspension travel). Custom builds may require additional workarounds.

4. **Cost of Replacement Parts** While the rear structure itself is reasonably priced, individual components (e.g., bushings, shocks, or bearings) can add up in cost if the bike has seen heavy use or neglect.

5. **Potential for Wear** If the bike was ridden aggressively or poorly maintained, the swingarm pivots, bushings, or subframe mounts may be worn out, requiring replacement alongside the structure.

6. **Weight** The rear structure, while durable, contributes to the bike s overall weight. Riders looking for a lighter bike may prefer aftermarket alternatives (e.g., aluminum swingarms).

7. **Availability of Used Parts** While not uncommon, finding a complete, undamaged rear structure in good condition may require searching multiple sources, especially for older models.

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The **Yamaha YZ250F/YZ450F rear structure (2S2-2-21190-00-00)** is a solid, reliable choice for riders who prioritize durability, direct fitment, and ease of maintenance. It s an excellent option if you re restoring a bike, replacing a damaged part, or need a high-quality used component. However, it s not ideal if you re seeking lightweight customization or plan to ride in extremely harsh conditions without proper maintenance.

- **Inspect for rust, cracks, or weld failures** especially on the swingarm and subframe.

- **Check for wear in bushings, pivots, or suspension mounts** these may need replacement alongside the structure.

- **Verify compatibility** with your specific model year (some minor variations exist between YZ250F and YZ450F).

- **Compare pricing** sometimes aftermarket swingarms or subframes offer better value for modified builds.

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- **Buy it if:** You need a reliable, direct-fit replacement for a damaged or worn rear structure, you re restoring a bike, or you want a high-quality used part without extensive modifications.

- **Avoid it if:** You re looking for a lightweight or highly customizable swingarm, the bike has severe rust or structural damage, or you prefer newer, more advanced designs.

- For **lightweight builds**, consider aftermarket aluminum swingarms (e.g., **Yeti, Pro Circuit, or custom fabricators**).

- For **modern upgrades**, look at newer Yamaha models (e.g., YZ250F/YZ450F 2010 ) or competitors like **Husqvarna or KTM** if you re open to a full bike swap.

- For **budget restorations**, check for **used but serviceable** rear structures from wrecked bikes (e.g., on Facebook Marketplace or bike forums).

**Final Verdict:** This part is a **safe, practical choice** for most riders in need of a stock replacement, but thorough inspection is essential to avoid hidden issues. If you re building a custom bike, weigh the pros and cons of stock vs. aftermarket options carefully.

Details:

2006 2009 Yamaha YZ250F YZ450F Aluminum Rear Subframe Structure 2S2-21190-00-00.

part #: 2s2211900000 prices

• $105.99-$180.00

specifications mocycfra:

• for models: Yz250f, Yz450f
• for makes: Yamaha
• for years: 2006-2009
• mpn: 2s2-21190-00-00
• frame type: Rigid
• machine type: Off-road Motorcycle
• color: Silver
• material: Aluminum
• vintage part: No
• placement on vehicle: Rear
• type: Subframe
• finish: Polished

returns mocycfra:

• policy: No Returns

general mocycfra:

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

offer mocycfra:

• options: Ship-to-home
• quantity: 1
• sold: 0
• started: April 10, 2026
• best offers: True
• availability: In Stock

payments mocycfra:

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

seller mocycfra:

• # reviews: 6
• rating: 100.0%
• city: Rockford, Illinois

shipping mocycfra:

• transit: 6-12 Days
• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• cost: $46.98
• class: Standard

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