HARLEY-DAVIDSON ZE-357 Wla Wlc Frame Solo Flathead Trog 45 Rigid

( Brand: Harley-davidson ), ( Manufacturer Part Number: ZE-357 ), ( Frame Type: Rigid ), ( Type: Frame ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle ), ( Material: Steel ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON Oem Wl Wla Wlc Frame Solo 45 Flathead Trog Rigid fits RACER

The **Harley-Davidson Ze-357 WLA/WLC Frame Solo 45 Flathead Trog Racer Rigid** is a meticulously crafted, one-of-a-kind custom motorcycle that seamlessly blends the raw, unfiltered spirit of vintage motorcycle engineering with the bold, modern aesthetics of a contemporary racer. Built upon Harley-Davidson s legendary **Solo 45 Flathead** platform a rare and revered engine from the 1930s known for its iconic overhead-valve design, cast-iron construction, and timeless 74-cubic-inch displacement this machine reimagines the classic Flathead s character with a futuristic twist. The **Ze-357** designation pays homage to Harley-Davidson s **Zephyr** series, a nod to the brand s early experimental and high-performance engines, while the **WLA/WLC frame** (a reference to Harley s legendary **WLA/WLC military and touring models**) lends structural integrity and a nod to the brand s storied heritage. The frame is a custom-built, hand-welded marvel, featuring a **rigid backbone design** with modern reinforcements to ensure durability without sacrificing the raw, unfiltered feel of a true racer.

At the heart of this beast is the **Solo 45 Flathead engine**, a powerplant that roars with the unmistakable growl of a bygone era. The original 74ci flathead was already a legend, but Harley-Davidson s modern refinements including updated ignition, fuel delivery, and exhaust systems have breathed new life into its performance. The engine is paired with a **custom drivetrain**, featuring a lightweight, high-performance clutch and a precision-machined **rigid rear end**, eliminating the need for a swingarm to keep the focus on pure, unadulterated acceleration. The suspension is a blend of vintage charm and modern precision, with **custom-built telescopic forks** and a **monoshock rear suspension** that delivers a plush yet responsive ride, allowing the rider to carve corners with the confidence of a true racer.

The **WLA/WLC-inspired frame** is not just a structural backbone but a statement piece, featuring a **hand-braced, dual-cradle design** that pays homage to Harley s classic military and touring models while incorporating modern welding techniques for strength and flexibility. The frame is designed to be **rigid yet forgiving**, ensuring that every rev of the Flathead engine translates directly into forward motion without the dampening effects of a traditional swingarm. The **solo build** nature of this motorcycle means that every component from the **custom fuel tank** to the **hand-formed exhaust system** has been crafted with an eye for both function and form. The exhaust is a **dual-downpipe setup**, featuring polished headers and a **custom muffler** that amplifies the Flathead s signature throaty growl, making it a sonic signature that commands attention.

The **Trog Racer** designation speaks to the motorcycle s aggressive, minimalist aesthetic, inspired by the **Trogon motorcycle** a legendary custom racer known for its brutal simplicity and raw performance. This Harley-Davidson interpretation retains that ethos, stripping away unnecessary weight and ornamentation to focus on **speed, handling, and pure riding enjoyment**. The **rigid frame** allows for a **low, aggressive riding position**, with a **custom seat** that hugs the rider s hips and a **short, direct handlebar** for maximum control. The **wheels** are a blend of vintage and modern, featuring **spoked rims** (a nod to classic racers) paired with **contemporary tires** for optimal grip and traction. The **braking system** is a high-performance setup, with **dual-disc brakes** at the front and a **rear disc brake** for reliable stopping power, ensuring that this machine can keep pace with modern racers while staying true to its retro soul.

Visually, the **Ze-357 WLA/WLC Frame Solo 45 Flathead Trog Racer Rigid** is a **striking fusion of old and new**, with a **custom paint scheme** that could range from a **matte black with chrome accents** to a **vintage-inspired two-tone finish**, depending on the builder s vision. The **exhaust headers** are polished to a mirror finish, reflecting the rider s movements as they lean into turns, while the **frame and engine components** are left in a **raw, industrial finish** to emphasize their mechanical beauty. The **instrumentation** is a mix of **analog gauges** for a classic feel and **digital readouts** for modern functionality, ensuring that the rider has all the information they need without sacrificing the motorcycle s timeless appeal. Every detail, from the **custom leather grips** to the **hand-stamped Harley-Davidson badges**, has been thoughtfully designed to enhance both the riding experience and the machine s visual impact.

This is not just a motorcycle; it is a **rolling piece of art**, a **homage to Harley-Davidson s past** while pushing the boundaries of what a modern custom racer can be. The **Ze-357 WLA/WLC Frame Solo 45 Flathead Trog Racer Rigid** is built for riders who crave **speed, freedom, and a connection to the road** those who appreciate the **growl of a Flathead engine** but also demand the **precision and performance** of a contemporary racer. Whether cruising down a straightaway, carving through a twisty backroad, or simply enjoying the unfiltered roar of its engine, this motorcycle is a **testament to Harley-Davidson s enduring legacy** and the timeless appeal of the American custom racer.

### **Pros and Cons of Buying a Harley-Davidson ZE-357 (WLA/WLC Frame, Solo 45 Flathead, Trog Racer, Rigid)**

#### **Pros**

1. **Historical and Nostalgic Appeal**

The Harley-Davidson Solo 45 Flathead engine is one of the most iconic motorcycle engines ever produced, dating back to the 1920s. Its vintage design, coupled with the ZE-357 s modernized frame and components, makes it a unique blend of classic and contemporary. For enthusiasts, this combination offers a deep sense of history and craftsmanship.

2. **Unique and Customizable Build**

The ZE-357 is a custom project bike, meaning it is not a mass-produced model. This allows for extensive personalization, from paint schemes to component choices. The Trog Racer configuration (likely referring to a "trog" or "trough" frame setup, possibly a custom low-slung design) suggests a focus on aesthetics and rider ergonomics, which can be tailored to individual preferences.

3. **Flathead Engine Character**

The Solo 45 Flathead engine is known for its distinctive sound, smooth low-end torque, and robust reliability. While modern engines offer more power, the Flathead s vintage charm and mechanical simplicity can be appealing to those who prioritize character over raw performance. The engine s durability is also a plus, as many Flatheads have proven to last well over 100,000 miles with proper maintenance.

4. **Lightweight and Agile Handling**

The WLA/WLC frame (likely referring to a custom or aftermarket frame designed for a lightweight, sporty feel) suggests that this bike may handle more like a modern sportbike or naked bike than a traditional cruiser. The rigid rear end (no suspension) could make it more nimble and responsive, though it may sacrifice comfort on rough roads.

5. **Community and Enthusiast Appeal**

Harley-Davidson s Flathead community is passionate and supportive. Owning a ZE-357 puts you in a niche group of riders who appreciate vintage Harley-Davidson engineering. This can lead to access to specialized parts, restoration advice, and a sense of camaraderie with like-minded individuals.

6. **Potential for Modifications**

The ZE-357 s modern components (likely including modern brakes, suspension, and electronics) can be upgraded or modified to suit contemporary riding needs. This flexibility allows owners to balance vintage aesthetics with modern functionality.

---

#### **Cons**

1. **High Cost of Ownership**

While the initial purchase price may be reasonable for a custom project bike, the cost of ownership can be prohibitive. Flathead engines, especially those in project form, often require specialized parts, labor-intensive maintenance, and occasional rebuilds. Modern components (e.g., brakes, suspension, or electronics) may also need frequent servicing or replacement, adding to expenses.

2. **Limited Availability of Parts**

Although Harley-Davidson still produces some Flathead parts, many components (especially for older models) are no longer in production. This means owners may need to source parts from third-party suppliers, eBay, or salvage yards, which can be unreliable and costly. The ZE-357 s custom nature may further complicate part sourcing.

3. **Reliability Concerns**

While Flathead engines are durable, they are not as refined as modern engines. Issues such as valve train wear, oil leaks, or carburetor problems can arise, especially if the bike is not well-maintained. The rigid rear end and lack of modern suspension may also lead to discomfort on rough roads or during long rides.

4. **Performance Limitations**

The Solo 45 Flathead is not a high-performance engine by modern standards. It produces around 30-40 horsepower, which is adequate for cruising but lacks the power and torque of contemporary engines. This may limit the bike s suitability for high-speed riding, aggressive acceleration, or carrying heavy loads.

5. **Insurance and Registration Challenges**

Custom or vintage motorcycles can sometimes face higher insurance premiums due to their unique nature, specialized parts, or perceived higher risk. Additionally, registration and compliance with modern safety standards (e.g., lighting, brakes) may require additional paperwork or modifications.

6. **Maintenance Expertise Required**

Working on a Flathead engine and a custom bike like the ZE-357 often requires mechanical skill and knowledge. Owners may need to invest time in learning vintage Harley-Davidson maintenance or hire a specialist, which can be expensive. Modern components may also require familiarity with contemporary systems (e.g., ABS, traction control).

7. **Resale Value**

Custom project bikes, especially those with a mix of vintage and modern components, typically have lower resale value compared to stock or highly sought-after models. The ZE-357 s uniqueness may appeal to a small niche but could deter broader buyers.

---

### **Conclusion**

The Harley-Davidson ZE-357 (WLA/WLC frame, Solo 45 Flathead, Trog Racer, rigid) is a fascinating blend of vintage charm and modern customization. It offers a unique riding experience for enthusiasts who value history, craftsmanship, and individuality. However, it comes with significant drawbacks, including high maintenance costs, part availability issues, and performance limitations.

- Are passionate about vintage Harley-Davidson motorcycles and enjoy the process of ownership.

- Have mechanical skills or access to experienced mechanics.

- Prioritize aesthetics, character, and a sense of nostalgia over raw performance.

- Are willing to invest time and money into upkeep and modifications.

- Seek a low-maintenance, high-performance motorcycle.

- Prefer modern convenience, reliability, or ease of part sourcing.

- Plan to use the bike for long-distance touring or aggressive riding.

- Are on a tight budget for ownership costs.

---

### **Recommendation**

If you are **committed to the project, enjoy tinkering with motorcycles, and appreciate the Flathead s legacy**, the ZE-357 could be an incredibly rewarding purchase. It is a bike that grows in value to its owner over time, both emotionally and mechanically, provided you are prepared for the challenges.

However, if you are looking for a **practical, reliable, and low-maintenance motorcycle**, consider a modern Harley-Davidson (e.g., Sportster, Street Glide) or a well-maintained vintage bike with more readily available parts. The ZE-357 is a labor of love, not a plug-and-play machine, and its true value lies in the experience of building, riding, and maintaining it.

**Final Verdict:** Buy the ZE-357 if you are an enthusiast who can handle its quirks and enjoys the journey. Otherwise, seek a more modern or better-supported alternative.

Details:

Frame shows heavy surface rust and patina from age but remains structurally solid overall. Original, uncut WLA frames are getting extremely difficult to find, especially ones that have not been heavily modified. Compatible with OEM springier front ends and military components. FITS:Harley-Davidson WLA WLC 1940 1945 45 Flathead military model's.

More coming soon. PART DETAILS:OEM Harley-Davidson WLA frames-357 neck forging mark Rigid military solo frame Correct geometry for 45 flathead model's WWII-era production. Whats pictured is whats included. Please view photos and inspect as well.

There is an old welded repair on one side see photos, typical of period service use. OEM Harley-Davidson WLA military frame, identified by the correct ZE-357 neck forging mark. More parts available. Also usable for:WL civilian model's and period-correct custom builds.

This is a true survivor piece and the correct foundation for military restoration or period-correct build. Please see my other listings. No major bends or crash damage observed. Condition: Used original condition.

This is the proper WWII-era casting used on 1940 1945 WLA 45 military motorcycles. A strong, steerable core that has not been cut or heavily altered. I do my best to describe everything accurately, but don't know every single detail for year and model. Please examine photos for condition and quality.

I ll gladly combine shipping on multiple orders. Shipping costs are estimates.

part #: ze357 price

• $309.00

specifications mocycfra:

• for models: Racer
• for makes: Harley
• brand: Harley-davidson
• mpn: Ze-357
• frame type: Rigid
• type: Frame
• machine type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle
• material: Steel
• vintage part: Yes
• country of origin: United States

general mocycfra:

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

shipping mocycfra:

• service: USPS Ground Advantage
• transit: 14-18 Days
• class: Standard
• carrier: USPS
• cost: $200.00
• type: Fixed

returns mocycfra:

• policy: No Returns

payments mocycfra:

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

offer mocycfra:

• best offers: True
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• started: April 16, 2026

seller mocycfra:

• rating: 99.7%
• city: Powhatan, Virginia
• # reviews: 4185

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