HARLEY DAVIDSON 1HD1YYK11NB042575 Fxbbs Frame Chassis Wa Bos

( Brand: Harley Davidson ), ( Manufacturer Part Number: 1HD1YYK11NB042575 ), ( Part Type: Frame ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON Fxbbs Main Frame Chassis Wa Bos fits STREET BOB 2018–2024

The **Harley-Davidson 2018-2024 Street Bob FXBB (Frame & Chassis, WA/BOS)** is a meticulously crafted, high-performance motorcycle that embodies the timeless spirit of American craftsmanship while embracing modern engineering and customization potential. This iconic model is built upon the legendary **FXBB frame chassis**, a design that has been a staple in Harley-Davidson s lineup since the 1960s, known for its classic, low-slung stance, aggressive riding position, and unmistakable Harley aesthetic. The **FXBB frame** is constructed from high-strength steel, ensuring durability and structural integrity while maintaining a lightweight feel that enhances agility and handling. Its **dual-spar design** provides exceptional rigidity, allowing for precise throttle response and a confident ride, whether cruising down a scenic highway or navigating tight urban streets.

Under the hood, the **2018-2024 Street Bob FXBB** is powered by Harley-Davidson s **Evo engine**, a refined and reliable 1,250cc V-Twin that delivers a deep, resonant growl and a torque-rich performance characteristic of Harley s legendary sound. The **WA (Wide Angle)** or **BOS (Big Oil Squirter)** engine variant depending on the specific model year features a **12-degree crankshaft angle**, optimized cylinder heads, and a **fuel-injected** system for improved efficiency and power delivery. The **Evo engine** produces a smooth yet exhilarating ride, with a powerband that rewards patience and a low-end torque that makes acceleration effortless, even on steep grades. Whether you re a seasoned rider looking for a track-ready machine or a customizer seeking a blank canvas for personalization, the Street Bob s engine provides the perfect balance of heritage and performance.

The **FXBB frame chassis** is designed with a **low, aggressive riding position**, featuring a **21.5-inch seat height** (with optional aftermarket adjustments) that places the rider in a commanding, forward-leaning posture. This ergonomic setup enhances control and visibility, making it ideal for both highway cruising and technical riding. The **suspension system** is tuned for comfort and responsiveness, with **adjustable rear shocks** (on select models) and **front forks** that absorb bumps while maintaining stability. The **single-disc front brake system** (with optional dual-disc upgrades) provides reliable stopping power, though enthusiasts often enhance it with aftermarket components for improved performance. The **wide, low-slung fuel tank** and **sleek, angular fairings** contribute to the Street Bob s distinctive, retro-modern look, blending vintage Harley charm with contemporary styling cues.

One of the most appealing aspects of the **2018-2024 Street Bob FXBB** is its **customization potential**. The **FXBB frame** is a favorite among builders due to its **modularity and adaptability**, allowing riders to swap out components with ease. Whether you re installing a **custom exhaust system** for a deeper growl, upgrading to **aftermarket suspension** for a firmer ride, or adding **performance air filters and camshafts** for increased horsepower, the Street Bob serves as an excellent foundation for personal expression. The **removable fairings** and **exposed engine components** further emphasize its raw, mechanical appeal, making it a blank slate for those who love to tinker and refine their ride.

The **2018-2024 Street Bob FXBB** is not just a motorcycle; it s a **statement of individuality and freedom**. Its **retro-futuristic design**, **torque-rich engine**, and **versatile chassis** make it a versatile machine for riders of all backgrounds. Whether you re a purist who appreciates Harley-Davidson s heritage or a modernist who loves pushing boundaries, this bike offers a perfect blend of tradition and innovation. With its **durable construction**, **reliable performance**, and **endless customization options**, the Street Bob FXBB stands as a testament to Harley-Davidson s enduring legacy where every ride feels like a journey, and every turn of the throttle is a celebration of the open road.

### **Pros and Cons of Buying a 2018-2024 Harley-Davidson Street Bob FXBBS (1HD1YYK11NB042575)**

#### **Overview**

The **2018-2024 Harley-Davidson Street Bob FXBBS** is a custom-style cruiser built on the **FXBBS (Bobber) chassis**, featuring a **V-Twin engine (Evo or Twin Cam 114)** and a sleek, minimalist design. It balances performance, style, and practicality while catering to Harley s loyal fanbase. Below is a detailed breakdown of its strengths and weaknesses.

---

### **Pros**

1. **Strong Engine Options**

- **Evo Engine (2020 models):** The **Evo engine** (introduced in 2020) offers improved power (110-114 hp), better fuel efficiency ( 40-45 MPG), and modern electronics like **Harley s Ride Mode Control (RMC)** and **Harley Quick Shift (HQS)**.

- **Twin Cam 114 (2018-2019):** While slightly older, it remains a reliable **114-cubic-inch V-Twin** with good low-end torque, though it lacks the Evo s efficiency and tech upgrades.

- Both engines are **air-cooled**, which reduces maintenance compared to liquid-cooled alternatives.

2. **Premium Build Quality & Harley Durability**

- Harley-Davidson is known for **long-lasting engines and frames**, especially on the **FXBBS platform**, which is built for durability.

- The **steel trellis frame** is robust, and the **FXBBS chassis** is designed for a **comfortable, upright riding position** with good handling for a cruiser.

- **High-quality materials** (e.g., **Twin-Glide shocks, cast wheels, and premium paint**) contribute to a premium feel.

3. **Custom Cruiser Aesthetics**

- The **Street Bob FXBBS** has a **clean, minimalist design** with a **low-slung frame, exposed engine, and classic Harley styling**.

- **Aftermarket customization potential** is excellent owners can easily modify **exhaust, saddlebags, handlebars, and paint** to fit their taste.

- **LED lighting (2020 models)** improves visibility and modernizes the look.

4. **Comfortable Riding Position**

- Unlike some aggressive cruisers, the **FXBBS has a more upright seat**, reducing back strain on long rides.

- **Adjustable ergonomics** (seat height, handlebars, footpegs) allow for a **personalized fit**.

- **Twin-Glide shocks** provide **smooth suspension** for a relaxed ride, though they may feel soft for aggressive riders.

5. **Good Fuel Efficiency for a Harley**

- The **Evo engine (2020 )** achieves ** 40-45 MPG**, which is **better than most Harley V-Twins** (previous models averaged 30-35 MPG).

- While not a fuel-sipping bike, it s **more efficient than expected** for a Harley cruiser.

6. **Harley s Brand Loyalty & Community**

- Harley-Davidson has a **dedicated fanbase**, meaning **strong dealer support, parts availability, and aftermarket parts**.

- **Harley Owners Group (H.O.G.) benefits** (insurance discounts, events, and community) add value.

- **Resale value** remains decent compared to some Japanese cruisers, though not as high as a Sportster.

7. **Reliability & Low Maintenance (Compared to Older Harleys)**

- The **FXBBS platform is well-supported** with **fewer common issues** than older Harley models (e.g., no major transmission or electrical problems).

- **Air-cooled engines** mean **no liquid cooling system failures** (a past issue with some Harleys).

- **Belt drive (2020 models)** eliminates chain maintenance, improving reliability.

8. **Sound & Throttle Response**

- The **Evo engine** has a **smooth, deep growl** with **good mid-range power**, making it enjoyable for both city and highway riding.

- **Twin Cam 114** riders appreciate its **classic Harley sound** and **torquey nature**, though it lacks the Evo s refinement.

9. **Good Handling for a Cruiser**

- While not a sportbike, the **FXBBS handles better than most Harleys** due to its **lightweight frame and responsive steering**.

- **Twin-Glide shocks** provide **stable cornering** without being too stiff.

10. **Aftermarket & Mod Potential**

- The **FXBBS is a favorite for custom builds**, with **easy access to the engine, exhaust, and suspension** for modifications.

- **Exhaust upgrades** (e.g., **Harley Performance, Akrapovic**)

- **Suspension tweaks** (e.g., **Ohlins, Progressive springs**)

- **Paint & bodywork** (e.g., **custom wraps, chrome accents**)

- **Electronics** (e.g., **Harley Quick Shift, custom gauges**)

---

### **Cons**

1. **Higher Price Tag (Especially for 2020 Evo Models)**

- The **FXBBS is not cheap**, with **MSRP ranging from $12,000 (2018 Twin Cam) to $15,000 (2024 Evo)**.

- **Used prices** can still be high due to demand, especially for **low-mileage examples**.

- **Dealer markups** are common, so **buying used or CPO (Certified Pre-Owned)** may save money.

2. **Fuel Efficiency Still Lagging Behind Japanese Cruisers**

- While the **Evo improves MPG**, it s **still worse than a Honda Shadow Spirit or Yamaha V Star** ( 50 MPG).

- **Long-distance riders** may find fuel costs higher than expected.

3. **Weight & Maneuverability**

- The **FXBBS is heavier than a Sportster** ( 600-650 lbs), making it **less nimble in tight spaces**.

- **Parking and low-speed handling** can be **clunkier** than lighter cruisers.

4. **Resale Depreciation**

- Harley-Davidson **depreciates faster than some Japanese brands**, meaning **used values drop more over time**.

- If you plan to sell later, **a Sportster or Indian Scout may hold value better**.

5. **Electrical & Tech Issues (Especially Older Models)**

- **2018-2019 Twin Cam models** have **some reported electrical gremlins** (e.g., **flickering lights, sensor failures**).

- **Evo models (2020 )** are more refined but still **not as tech-savvy as modern Japanese bikes** (e.g., **no advanced stability control**).

- **Harley s Ride Mode Control (RMC)** can be **glitchy** in some cases.

6. **Maintenance Costs Can Add Up**

- While **air-cooled engines are low-maintenance**, **Harley parts and labor are expensive**.

- **Chain (pre-2020 models) or belt (2020 ) replacement**

- **Suspension servicing (shocks, springs)**

- **Brake pad/rotor replacements**

- **Exhaust system maintenance**

- **Dealer labor costs** are **higher than independent shops** for some brands.

7. **Limited High-Speed Stability**

- The **FXBBS is not a highway cruiser** it **wanders slightly at high speeds** due to its **upright design**.

- **Wind resistance** can make **long highway rides tiring** compared to a more aerodynamic bike.

8. **Aftermarket Parts Can Be Expensive**

- While **Harley has a strong aftermarket**, **some premium mods (e.g., Akrapovic exhaust, Ohlins suspension) are costly**.

- **Custom paint and bodywork** can also **add significant expense**.

9. **Noise & Vibration (Especially Twin Cam Models)**

- The **Twin Cam 114** has a **loud, traditional Harley growl**, which some may find **too aggressive for city riding**.

- **Vibration levels** are **higher than modern bikes**, which may **fatigue riders on long trips**.

10. **Not Ideal for All Riding Styles**

- **Touring riders** may find it **less comfortable** than a **Tour Glide or Road Glide**.

- **Sporty riders** may prefer a **Sportster or a more agile cruiser**.

- **Beginners** might find the **weight and power overwhelming** compared to smaller bikes.

---

### **Conclusion & Recommendation**

#### **Who Should Buy a 2018-2024 Harley-Davidson Street Bob FXBBS?**

Details:

Buyer pays return shipping. 2018 2024 Harley Davidson Street Bob FXBBS Main Frame Chassis WA BOS: Donor Bike: 2022 19769 miles. All part are used and should be inspected before install.

part #: 1hd1yyk11nb042575 price

• $1799.59

specifications mocycfra:

• for models: Street, Bob
• for makes: Harley
• for years: 2018-2024
• brand: Harley Davidson
• mpn: 1hd1yyk11nb042575
• part type: Frame
• country of origin: United States

general mocycfra:

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

payments mocycfra:

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

returns mocycfra:

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

seller mocycfra:

• # reviews: 5541
• city: Camas, Washington
• rating: 99.6%

offer mocycfra:

• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home
• started: April 21, 2026

shipping mocycfra:

• type: Fixed
• cost: $0.00
• service: Flat Rate Freight
• class: Freight

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