TRIUMPH 37-3429 Hub Axle Front Brake Plate Shoes Tls Leading 37-3447

( Manufacturer Part Number: 37-3429 ), ( Type: Wheel Hub ), ( Oe/oem Part Number: 37-3447 ), ( Country Of Origin: United Kingdom )

Review TRIUMPH Hub Axle Front Brake Plate Shoes Tls Leading Inch fits TWIN BSA

The **Triumph 37-3429 BSA Hub Axle Front Brake Plate Shoes** and the **37-3447 Twin Leading Shoe (TLS) assembly** represent a meticulously engineered solution for vintage motorcycle enthusiasts seeking to restore or upgrade the braking performance of their classic Triumph models, particularly those equipped with the iconic BSA hubs. Designed to complement the precision of the BSA 350 or 500cc twin-cylinder engines, these brake components are crafted to deliver reliable, high-performance stopping power while maintaining the authentic aesthetic and mechanical integrity of the original build. The **37-3429 brake plate shoes** are forged from durable, heat-treated steel, ensuring they can withstand the rigors of daily riding or track use without warping or losing their shape. Their smooth, polished surfaces are engineered to maximize friction against the brake drum, providing consistent braking response even under heavy loads or prolonged use. The shoes are precision-machined to fit snugly within the brake housing, allowing for optimal alignment with the brake drum and minimizing wear on both the shoes and the drum itself.

For those seeking an even more advanced braking solution, the **37-3447 Twin Leading Shoe (TLS) assembly** takes performance to the next level by incorporating a leading-trailing shoe design. This innovative configuration ensures that both brake shoes engage the drum simultaneously, reducing brake fade and improving modulation. The TLS system is particularly effective on high-performance or heavily loaded bikes, as it distributes braking force more evenly across the drum, reducing the risk of overheating and extending the lifespan of both the shoes and the drum. The shoes in this assembly are also constructed from high-quality steel, with hardened edges to resist wear and tear, while the internal springs and linkages are designed to maintain consistent pressure against the drum, even as the shoes gradually wear down over time. Together, these components not only enhance braking efficiency but also contribute to a more refined and controlled riding experience, making them an ideal choice for riders who demand both performance and reliability from their classic machines.

Beyond their functional superiority, these brake components are also a testament to Triumph s commitment to heritage engineering. The **37-3429 and 37-3447 parts** are meticulously designed to replicate the original specifications of the BSA hubs, ensuring a perfect fit with minimal modification required. Whether restoring a vintage Triumph Bonneville, Speed Twin, or Thunderbird, these brake shoes integrate seamlessly with the existing drivetrain, allowing enthusiasts to preserve the mechanical soul of their bike while benefiting from modernized braking technology. The attention to detail extends to the fitment of the shoes within the brake mechanism, where precise clearances and alignments are maintained to prevent binding or excessive wear, ensuring that the braking system operates smoothly and predictably. For collectors, restorers, and performance-minded riders alike, these components offer a blend of authenticity and innovation, making them an essential addition to any Triumph enthusiast s toolkit.

### Pros and Cons of Buying Triumph/BSA Hub Axle Front Brake Plate Shoes (Part Numbers: 37-3429 and 37-3447)

1. **Compatibility** These parts are designed specifically for Triumph and BSA twin-cylinder motorcycles, particularly models from the mid-20th century (e.g., Triumph Bonneville, BSA Gold Star, or similar twins). They are direct replacements, ensuring a proper fit without modification.

2. **Reliability** BSA and Triumph were known for durable mechanical components, and brake parts from this era were built to last. High-quality cast iron or steel construction ensures longevity if maintained properly.

3. **Ease of Installation** Since these are standard replacement parts, they should fit without extensive machining or adjustments, assuming the hub and axle are in good condition. The twin-leading shoe (TLS) design improves braking efficiency compared to single-shoe setups.

4. **Availability of Spare Parts** While not as common as modern parts, these components are still widely available through classic motorcycle specialty shops, eBay, or aftermarket suppliers. They are not rare, so sourcing should not be difficult.

5. **Cost-Effective Upgrade** Compared to rebuilding or replacing an entire hub, these brake shoes are relatively inexpensive. They provide a straightforward way to restore or improve braking performance without a major overhaul.

6. **Historical Accuracy** For enthusiasts restoring original machines, these parts maintain authenticity, preserving the bike s period-correct appearance and function.

7. **Durability of Materials** The materials used in these brake shoes (likely cast iron or steel) are robust and resistant to wear, provided they are not subjected to extreme conditions or neglect.

---

1. **Age and Wear** These parts are decades old, which means they may show signs of rust, pitting, or general wear. Inspecting them closely for cracks, corrosion, or uneven surfaces is essential before purchasing.

2. **Potential for Misalignment** If the hub or axle is worn or bent, the brake shoes may not function optimally even after installation. This could lead to uneven braking or reduced effectiveness.

3. **Limited Modern Support** Unlike modern motorcycles, these parts lack widespread manufacturer support. If issues arise (e.g., brake drag, uneven wear), troubleshooting may require manuals from the era or expert advice from classic bike mechanics.

4. **Compatibility with Modern Modifications** If the bike has been modified (e.g., wider wheels, aftermarket hubs, or disc brakes), these parts may not fit perfectly. Always verify compatibility with the specific model and any aftermarket components.

5. **Rust and Corrosion Risk** Older parts are prone to rust, especially if stored improperly. Thorough cleaning and inspection are necessary to avoid seizing or premature failure.

6. **Limited Availability of Original Manuals** Unlike modern bikes, finding service manuals or diagrams for these parts can be challenging. This may make installation or troubleshooting more difficult for those unfamiliar with classic bike mechanics.

7. **Potential for Counterfeit or Mismatched Parts** Since these parts are not mass-produced today, there is a risk of purchasing knockoffs or mismatched components. Buying from reputable sellers (e.g., specialty shops or trusted online retailers) reduces this risk.

8. **Maintenance Requirements** Classic brake systems require regular attention, such as adjusting shoe tension, checking for wear, and ensuring proper lubrication. Neglect can lead to brake failure or damage to the hub.

---

Buying Triumph/BSA hub axle front brake plate shoes (37-3429 and 37-3447) is a practical choice for restoring or maintaining a classic twin-cylinder motorcycle. The parts are reliable, compatible, and cost-effective, making them ideal for enthusiasts who prioritize authenticity and mechanical simplicity. However, potential buyers should be prepared for the challenges of working with older components, including the need for careful inspection, potential rust issues, and limited modern support. For those with mechanical experience or access to classic bike resources, these parts offer a straightforward solution to improve braking performance.

- You have a clear understanding of the bike s model and the specific requirements for these parts.

- You are willing to inspect the parts thoroughly for rust, wear, or damage before installation.

- You have access to tools, manuals, or expert guidance for installation and maintenance.

- You are restoring a bike and want to maintain historical accuracy.

- You are unsure about the condition of the parts or the compatibility with your bike s current setup.

- You lack experience working with classic brake systems and need guidance.

- You are open to modern upgrades (e.g., disc brakes or aftermarket drum brake kits) for improved performance and reliability.

For best results, purchase from a reputable seller (e.g., a classic motorcycle shop or a trusted online retailer) and verify the parts fit your bike s specifications before committing. If possible, consult a mechanic familiar with Triumph/BSA twins to ensure proper installation and function.

Details:

Please zoom-in on photos to see detailed look. NOTE:Twin-Lead Brake assembly is missing arm. Twin-Leading. History of use is unknown.

Scratches, scuffs. Please verify your bike can use this part before purchasing. 7 Front Brake Plate. 1969-70 Triumph/BSA.

W/ Hub Shoes. As shown in photos. Please let me know if you would like more measurements, photos, etc. Even OLD PARTS Deserve a New Life.

Surface rust. Up for your consideration is an original.

part #: 373429 prices

• $149.99-$250.00

specifications wheehucyc:

• for models: Bsa, Twin
• for makes: Triumph
• mpn: 37-3429
• type: Wheel Hub
• oe/oem part number: 37-3447
• country of origin: United Kingdom

offer wheehucyc:

• sold: 0
• quantity: 1
• availability: In Stock
• started: February 26, 2026
• options: Ship-to-home
• best offers: True

seller wheehucyc:

• # reviews: 2664
• rating: 100.0%
• city: Riverside, California

returns wheehucyc:

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

shipping wheehucyc:

• cost: $20.00
• transit: 2-6 Days
• service: Standard
• type: Fixed
• class: Standard

general wheehucyc:

• Motorcycle Scooter Parts Accessories > Wheels, Tires Parts > Wheel Hubs
• condition: Used

payments wheehucyc:

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

Triumph 37-3429 Is Similar To:

• 1211-02 Triumph Tiger Rear Hub Cush Drive (28.8% similar) Shipping is usually set as. Item sold as per. Sometimes a single picture does not show all visual imperfections. As far the new parts, they are typically in original packaging with part numbers. Postal service parcel post, first class package or priority mail. If you don't live in the us may contact...(May 15th, 2018)
• 200362 Triumph Daytona Rear Wheel Drive Hub (20.5% similar) This bike was in an accident and shuddered damages to all sides, however it started ran with no issues. If there are any specific questions regarding an item please feel free to prior purchasing. See pictures for a better visual. Held a strong steady idle. This drive hub has light scratches or ...(September 6th, 2018)
• 29-5962 Bsa Front Part Triumph Norton Matchless Ajs (25.2% similar) Bsa B44 front HUB7 brake, part excellent used condition. May fit other model's...(September 16th, 2018)
• 37-4129 Triumph Disk Brake Front Wheel Bonneville Trident Rv Hubs (37.6% similar) Triumph disk brake front wheel Bonneville T140 v e trident T150 T160 750 RV hubs images to original T140V parts including one bare hub spokes rim, assembly with axle bearings, rotor 2 mounting bolts, in fair good condition. The rim does have correct stamping w of 4 original rotor bolts included. The...(September 8th, 2018)
• A9640085 Triumph Finisher Axle Nut (27.1% similar) Yo warren Lt...(August 8th, 2017)
• A9730517 Triumph Thunderbird Chrome Motorcycle Logo Hub Cap Estate Find (29.7% similar) ...(June 9th, 2018)
• Pin 6682-02-025 Triumph Speed Triple Rear Hub Cush Drive Rubber Daytona (23.2% similar) Having the donor vehicle identification number from part came off of. Age and mileage should be considered in determining normal wear. The internet is not only option. It is the solution to getting you back on road of freedom. View full image right on video, then left screen to watch the video in. ...(February 15th, 2019)
• T150 Bsa Triumph Triples Rare Trident Front Brake Drum Hub Cover (35.1% similar) Here is the special right-side front hub cover for bsa A75 rocket 3 triumph T150 trident. Please review all photos carefully and ask questions. Appreciate you taking a look. Good condition, usual scratches, see photos. Also used on one year of T120 Bonneville...(July 26th, 2018)
• T2001368 Triumph Bonneville Thruxton Efi Spoked Laced Front Wheel Hub (28.8% similar) It is a little dirty and has some marks from previous use storage but looks good. Triumph thrusting wheel hub manufacturer: part: T2001368 condition: used condition : this is a front in good...(September 18th, 2018)
• T2010257 Triumph Speed Triple Rear Back Wheel Right Left Hubs Hub (22.8% similar) Triumph speed triple rear back wheel right left hubs hub set T2010257 thumbnails to this is in very good condition and shows normal signs of wear. The rear hub set has light scratches. Items will not be shipped until paid in full...(July 4th, 2018)
• T2012129 Triumph America Rear Back Sprocket Hub (22.9% similar) Items will not be shipped until paid in full. Triumph America rear back sprocket hub sprocket: T2012129 thumbnails to these and are in very good condition shows normal signs of wear...(August 20th, 2018)