LUCAS 70-6389 Norton Coil Brackets 40MM E6389

( Brand: Lucas ), ( Manufacturer Part Number: 70-6389 ), ( Part Type: Bracket Coil ), ( Compatible Make: Triumph, Bsa, Norton ), ( Surface Finish: Plated )

Review LUCAS Used Lot Triumph Norton Coil Brackets 40mm fits BSA

The **Lucas 70-6389 Triumph BSA Norton Coil Brackets (40mm, E6389)** are a meticulously engineered set of high-performance suspension components designed exclusively for classic Triumph, BSA, and Norton motorcycles equipped with the iconic 40mm E6389 forks. These brackets are crafted to deliver superior handling, stability, and a refined riding experience by enhancing the fork s functionality while maintaining the timeless aesthetic of these legendary machines. Engineered from durable, high-grade steel, these brackets are built to withstand the demands of both track and road use, ensuring long-lasting reliability without compromising on precision. The design incorporates a robust mounting system that securely interfaces with the fork s internal components, allowing for optimal shock absorption and fork travel, which is particularly beneficial for riders seeking a more controlled, responsive ride. Whether you re cruising along scenic backroads or pushing the limits on a twisty track, these brackets help reduce fork slop, minimize unwanted movement, and improve overall steering feedback, making them an essential upgrade for enthusiasts who demand both performance and authenticity. The fitment is straightforward, with precise cutouts and alignment points that ensure a seamless installation, preserving the original fork s integrity while unlocking its full potential. Ideal for restomod projects, track days, or daily riding, the Lucas 70-6389 brackets are a testament to the brand s commitment to quality and innovation, offering a perfect blend of heritage and modern engineering for riders who refuse to compromise on either.

**Pros and Cons of buying a Lucas 70-6389 Triumph BSA Norton Coil Brackets (40mm E6389)**

1. **Compatibility** These brackets are specifically designed for Triumph, BSA, and Norton models with the E6389 coil spring, ensuring a precise fit without modification. This reduces the risk of installation issues compared to generic parts.

2. **Durability** Lucas is a well-known brand in the motorcycle industry, particularly for aftermarket suspension components. These brackets are likely made from high-quality materials, such as steel or reinforced aluminum, which should withstand regular use and stress.

3. **Performance Enhancement** Properly fitted coil brackets can improve suspension alignment, reduce flex in the swingarm, and enhance overall ride stability. If your current brackets are worn or misaligned, replacing them can lead to better handling and comfort.

4. **Easy Installation** Since these are direct replacements for the OEM-style brackets, they should be relatively straightforward to install, especially if you have basic mechanical skills. No major welding or fabrication is typically required.

5. **Cost-Effective Upgrade** Compared to full suspension rebuilds or custom fabrication, these brackets offer a budget-friendly way to address suspension-related issues without sacrificing performance.

6. **Availability of Support** Lucas has a reputation for providing customer support and technical assistance, which can be helpful if you encounter any issues during installation or use.

7. **Aesthetic Fit** If you prioritize a clean, period-correct look, these brackets should blend seamlessly with the original design of your bike, avoiding the "aftermarket" appearance of some generic parts.

---

1. **Limited Customization** These are stock-style replacements, meaning they won t offer adjustable features like some modern or aftermarket brackets. If you re looking for tunability (e.g., adjustable preload or rebound damping), you may need to explore other options.

2. **Potential for Wear Over Time** While durable, brackets can still wear out, especially if the bike is ridden aggressively or on rough terrain. The lifespan depends on maintenance and riding conditions.

3. **Fitment Variations** Even though these brackets are designed for E6389 coils, slight variations in swingarm or frame geometry between different bike models (e.g., Triumph 650 vs. Norton Manx) could require minor adjustments. Always double-check compatibility with your specific bike.

4. **Quality Control Concerns** As with any aftermarket part, there s a risk of receiving a subpar unit, especially if purchased from an unverified seller. Reputable dealers or direct-from-manufacturer purchases mitigate this risk.

5. **No Warranty on Some Sales Channels** If buying from a third-party seller (e.g., eBay, Facebook Marketplace), warranties may not apply. Purchasing from an authorized Lucas dealer or motorcycle parts store ensures coverage.

6. **Installation Skill Dependency** While straightforward, improper installation (e.g., overtightening, misalignment) can lead to premature wear or even damage to the swingarm or frame. If unsure, consulting a professional mechanic is advisable.

7. **Limited Availability** These may not be as widely stocked as more common parts, so lead times could be longer depending on the retailer.

---

The Lucas 70-6389 Triumph BSA Norton coil brackets (40mm E6389) are a solid choice for riders looking to replace worn or damaged OEM-style brackets. They offer a balance of compatibility, durability, and ease of installation at a reasonable cost. These brackets are ideal for those who prioritize a direct replacement solution without the need for extensive modifications or tunability.

However, if your primary goal is to fine-tune suspension performance or achieve a more aggressive setup, you may need to explore aftermarket alternatives with adjustable features. Additionally, always verify fitment with your specific bike model and purchase from a trusted source to avoid quality issues.

If your bike s suspension is experiencing issues like flex, misalignment, or coil spring wear, and you re satisfied with the stock-style appearance, **proceed with purchasing these Lucas brackets**. They are a practical and reliable upgrade for most Triumph, BSA, and Norton models using the E6389 coil spring.

- Inspect the brackets upon arrival for defects.

- Follow the manufacturer s installation guidelines carefully.

- Consider professional installation if you lack experience with suspension work.

- Pair this upgrade with a full suspension check to ensure optimal performance.

If you re open to more advanced suspension tuning, research aftermarket options like adjustable coil springs or custom brackets, but for a straightforward and effective replacement, the Lucas 70-6389 brackets are a strong recommendation.

Details:

Lot of used Lucas 40MM coil brackets for Triumph BSA Norton. A little crusty but usable.

part #: 706389 prices

• $8.77-$16.13

specifications cyclevintagee:

• for models: Bsa
• for makes: Triumph
• brand: Lucas
• mpn: 70-6389
• part type: Bracket Coil
• compatible make: Triumph, Bsa, Norton
• surface finish: Plated

offer cyclevintagee:

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

shipping cyclevintagee:

• type: Calculated
• cost: $5.62
• service: USPS Ground Advantage
• transit: 8-11 Days
• carrier: USPS
• class: Standard

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

payments cyclevintagee:

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

seller cyclevintagee:

• # reviews: 180
• city: Brooklyn, New York
• rating: 100.0%

returns cyclevintagee:

• policy: No Returns

Lucas 70-6389 Is Similar To:

• 01-91 Sparky Bsa Triumph Norton Harley Davidson Lucas Magneto Spark Plug (38.6% similar) Ideal for older vintage machines requiring anon-resistor cap. Also excellent for vintage snowmobiles and other engines. 1960 S sparky spark plug casabas triumph norton Harley Davidson Lucas magneto caps made of flexible neoprene rubber for a snug fit over...(September 12th, 2018)
• 189210 Lucas Nos Bearing Set Bsa Goldstar Ajs Matchless (32.5% similar) Bsa gold star,As,matchless. Never installed. New old stock Lucas gen. See photos for details...(July 1st, 2018)
• 200431 Lucas Generator Brush Plate With Springs Clockwise Ariel Bsa Brough (25.4% similar) Keep your eyes open for other rarities in my future listings. Dormice closed down on, but I still deal in European motorcycle parts memorabilia...(October 5th, 2018)
• 200713 Lucas Nos Triumph Bsa (39.6% similar) I combine shipping. 1STKICKCYCLES. Please see photo double check part number to make sure it fits your motorcycle before buying. Please see my many other offers and listings. Genuine oem part. All parts are original genuine nos triumph, they may show shelf ware or need dusting from decades of ...(August 24th, 2017)
• 34660 Lucas Switch Norton Nos Original (35.8% similar) Popular norton switch nos original...(August 19th, 2018)
• 400052 Triumph Lucas Dimmer Switch Rubber Nos Box48 (30.3% similar) I'm not out to rip anyone off. This is a real part. Some of the parts have shelf wear and I will do my best to note it. If there would be a problem let me know as soon as you can. It is the good stuff if you are trying to do your bike right. Look at the pictures and ask question before you bib the ...(October 12th, 2016)
• 458725 463107 12-173 E2741 702741 D100 Triumph And Lucas Manual Cable Advance Retard Parts Magneto Trophy (26.6% similar) These are the parts that pre unit triumph TR5 TR6 came with for manual advance and retard cable operated functions of Lucas K2F magneto set up. Dormice closed down on, but I still deal in European motorcycle parts memorabilia. Most of these parts will work on a manual advance Lucas K2F magneto for ...(September 2nd, 2018)
• 459321 Lucas Nos Magneto Cam Ring Triumph Norton Bsa (43.3% similar) All parts listed as nos are genuine ex-dealer stock and guaranteed. Gets you noticed. This will assure an accurate combined shipping cost. Some parts may have a protective coating, or light surface rust corrosion...(February 15th, 2019)
• 460051 Lucas Nos Contact Breaker Triumph Norton Bsa (43.7% similar) Some parts may have a protective coating, or light surface rust corrosion. All parts listed as nos are genuine ex-dealer stock and guaranteed. This will assure an accurate combined shipping cost...(February 15th, 2019)
• 46730f Lucas Points And Plate Bsa Triumph Motorcycle Works Fine (41.2% similar) ...(April 24th, 2018)
• 47209 Lucas Nos Stator Triumph Trident Bsa Rocket (44.4% similar) Fits triumph trident bsa rocket this is a nos Lucas stater assay...(October 22nd, 2018)