YAMAHA 4S1-F111B-12-00 Rear Big

( Manufacturer Part Number: 4S1-F111B-12-00 )

Review YAMAHA Big Rear Subframe fits BEAR YFM IRS 400 2007–2012

The Yamaha YFM 400 Big Bear IRS Rear, model number 4S1-F111B-112-00, is a high-performance rear suspension system designed specifically for Yamaha's 400cc ATVs produced between 2007 and 2012. This IRS (Independent Rear Suspension) system delivers exceptional handling, comfort, and durability, making it an ideal upgrade for off-road enthusiasts who demand the best from their ATV.

The heart of this suspension system is its double wishbone design, which utilizes a centralized shock absorber mounted in a lightweight and robust aluminum housing. This design not only minimizes unsprung weight but also enhances traction and stability, allowing the ATV to conquer various terrains with ease. The IRS system also features a full float linkage, which ensures optimal wheel travel and eliminates the need for cams or idlers, resulting in smoother operation and reduced wear.

The 4S1-F111B-112-00 comes with adjustable piggyback reservoir shocks that allow riders to fine-tune the suspension to their preferences. The shocks feature a high-performance damping system that delivers excellent compression and rebound control, ensuring consistent performance in all riding conditions. The adjustable preload allows riders to compensate for varying cargo or passenger weights, ensuring optimal suspension performance and a comfortable ride.

The IRS rear suspension system is also designed for easy installation, requiring no modifications to the frame or subframe. The kit includes all necessary hardware, making it a straightforward upgrade for experienced riders or those looking to enhance the performance of their Yamaha 400 Big Bear ATV.

In summary, the Yamaha YFM 400 Big Bear IRS Rear Suspension System, model number 4S1-F111B-112-00, is a high-performance, adjustable, and durable upgrade for Yamaha's 400cc ATVs produced between 2007 and 2012. It delivers exceptional handling, comfort, and traction, making it an ideal choice for off-road enthusiasts who demand the best from their ATV.

The Yamaha YFZ450 Big Bear IRS Rear, model number 4S1-F111B-112-00 (2007-2012), is a popular choice for off-road enthusiasts due to its powerful engine, responsive handling, and advanced suspension system. Here are some pros and cons to help you make an informed decision about purchasing this ATV:

1. Powerful engine: The YFZ450 is equipped with a 449cc liquid-cooled, single-cylinder, 4-stroke engine that delivers impressive power and torque, making it suitable for various riding conditions.

2. Advanced suspension system: The Independent Rear Suspension (IRS) system provides excellent handling and stability, allowing riders to tackle rough terrains with confidence.

3. Comfortable ergonomics: The YFZ450 features a comfortable and adjustable seat, making long rides more enjoyable.

4. Reliable: Yamaha is known for manufacturing high-quality ATVs, and the YFZ450 is no exception. It is known for its durability and long-lasting performance.

5. Versatile: The YFZ450 can be used for various off-road activities, including trail riding, dune riding, and racing.

1. Expensive: The YFZ450 is on the higher end of the price range for ATVs, making it a significant investment.

2. Limited storage: The YFZ450 has limited storage space, which may not be suitable for riders who need to carry extra gear or supplies.

3. Not street legal: The YFZ450 is designed for off-road use only and cannot be registered for street use.

4. Maintenance: Like any other ATV, the YFZ450 requires regular maintenance to keep it in top condition. This can add to the overall cost of ownership.

In conclusion, the Yamaha YFZ450 Big Bear IRS Rear is an excellent choice for off-road enthusiasts who are looking for a powerful, responsive, and reliable ATV. Its advanced suspension system, comfortable ergonomics, and versatility make it a popular choice among riders. However, its high price tag, limited storage, and lack of street legality may be potential drawbacks for some.

If you are in the market for a high-performance ATV for off-road use and have the budget for it, the Yamaha YFZ450 Big Bear IRS Rear is an excellent choice. Its powerful engine, advanced suspension system, and comfortable ergonomics make it a great investment for serious off-road enthusiasts. However, if you are on a tighter budget or require more storage space, there may be other ATVs that better suit your needs. Ultimately, it's essential to consider your budget, riding style, and specific requirements before making a purchase.

part # 4s1f111b1200 prices

• $82.50-$109.99

specifications atvweld:

• for models: Yfm, Irs, 400, Bear
• for makes: Yamaha
• for years: 2007-2012
• manufacturer part number: 4S1-F111B-12-00

payments atvweld:

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

returns atvweld:

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

general atvweld:

• ATV, Side-by-Side UTV Parts Accessories > Body Frame > Other Body Frame
• condition: Used

seller atvweld:

• # reviews: 99904
• rating: 99.6%

offer atvweld:

• sold: 0
• best offers: True
• options: Ship-to-home
• started: March 18, 2025
• quantity: 1
• availability: In Stock

shipping atvweld:

• class: Expedited
• cost: $0.00
• type: Fixed
• service: Expedited
• transit: 3-7 Days

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