1. Antique, Vintage, Historic Motorcycle Parts For Sale
  2. sku: 17762208772084631
  3. TRIUMPH 57-4391

TRIUMPH 57-4391 First Gear Layshaft 24T T150V W6888

fits model: T120, T140, Tr7v. make: Triumph.

57-4391 Triumph New First Gear Layshaft 24t T120 T140 Tr7v T150v W6888

( Manufacturer Part Number: 57-4391 ), ( Part Type: Gear )

Review TRIUMPH New First Gear Layshaft 24t fits T120 T140 TR7V

Triumph 57-4391 First Gear Layshaft - A Compatible and Durable Solution for Your Triumph Motorcycle

The Triumph 57-4391 First Gear Layshaft is an essential component that ensures smooth and efficient power transmission in a variety of Triumph motorcycle models, including T120, T140, TR7V, T150V, and W6888. This high-quality layshaft is a direct replacement for your worn-out or damaged original part, offering a reliable solution to keep your motorcycle running optimally.

Crafted with precision engineering, the Triumph 57-4391 First Gear Layshaft boasts a 24-tooth gear design that seamlessly meshes with the corresponding engine components. This layshaft is manufactured to exacting standards to ensure a perfect fit and smooth operation. It is designed to withstand the rigors of regular use, making it an ideal choice for both daily commuting and long-distance touring.

The Triumph 57-4391 First Gear Layshaft is made from durable materials, ensuring longevity and reliability. It is heat-treated for increased strength and resistance to wear, while its hardened and ground gears guarantee precise tooth profiles for optimal performance. The layshaft is also finished with a protective coating to resist corrosion and ensure a long service life, even in harsh environments.

Installing the Triumph 57-4391 First Gear Layshaft is a straightforward process, thanks to its easy-to-follow installation instructions. The layshaft comes fully assembled, eliminating the need for time-consuming assembly work. With this replacement part, you can restore your Triumph motorcycle's performance and ensure a smooth and enjoyable riding experience.

In summary, the Triumph 57-4391 First Gear Layshaft is a high-quality, reliable, and durable replacement part designed specifically for Triumph motorcycles. It ensures smooth power transmission, improves performance, and extends the service life of your motorcycle. Whether you're a daily commuter or a long-distance tourer, the Triumph 57-4391 First Gear Layshaft is an essential upgrade that will keep your motorcycle running at its best.

Product: Triumph 57-4391 First Gear Layshaft 24t (for T120, T140, TR7V, T150V, W6888)

Pros:

1. Compatibility: This part is specifically designed for several popular Triumph motorcycle models, ensuring a precise fit and functioning.

2. Durability: Triumph is known for manufacturing high-quality components, and this first gear layshaft seems to maintain that standard.

3. Availability: As a replacement part, this layshaft is readily available for purchase when needed.

Cons:

1. Cost: Replacement parts can often be quite expensive, and this part may be no exception.

2. Skill Level: Installing the layshaft may require a certain level of mechanical skill and knowledge, which some users may not possess.

3. Potential for Damage: During installation or removal, there's a risk of damaging other parts due to the delicate nature of some components.

Conclusion:

The Triumph 57-4391 First Gear Layshaft is a well-crafted replacement part for several Triumph motorcycle models. Its compatibility and durability are significant advantages. However, its cost, potential need for technical skill, and risk of damage during installation should be considered.

Recommendation:

If you are a confident DIY mechanic or have access to one, and your budget allows for it, this part could be a valuable investment in maintaining or restoring your Triumph motorcycle. If you're unsure about the installation process or would prefer professional handling, consider having a trusted mechanic install the part for you.

Details:

On photos below. This will assure an accurate combined shipping cost. Satisfaction Guaranteed!: All parts listed as NOS are genuine ex-dealer stock and guaranteed. Some parts may have a protective coating, or some light surface rust/corrosion.

part #: 574391 prices

  • $79.99-$229.99

specifications cyclevintagee:

  • for models: T120, T140, Tr7v
  • for makes: Triumph
  • mpn: 57-4391
  • part type: Gear

returns cyclevintagee:

  • policy: Returns Accepted
  • time: 60 Days
  • paid by: Seller

shipping cyclevintagee:

  • cost: $12.05
  • transit: 4-8 Days
  • type: Calculated
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage

offer cyclevintagee:

  • best offers: True
  • availability: In Stock
  • sold: 0
  • quantity: 7
  • started: September 18, 2025
  • options: Ship-to-home

general cyclevintagee:

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

payments cyclevintagee:

  • credit card: Diners-club
  • wallet: Paypal
  • other

seller cyclevintagee:

  • # reviews: 95071
  • rating: 99.9%
  • city: Phoenixville, Pennsylvania
for models: t120, t140, tr7v, for makes: triumph, part type: gear,
category: motorcycle parts > motorcycle scooter parts accessories, sku: 17762208772084631,
Triumph 57-4391 Is Similar To:
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5 offers $79.99–$229.99 USD
  • New. Offer #1 priced at $79.99 + $12.95 shipping estimate = $92.94* total. Cash Paid! No hassles!.+$12.95 shipping
  • Used. Offer #2 priced at $229.99 + $15.00 shipping estimate = $244.99* total. Cam gear set REMOVED FROM A 1973 Triumph Trident- Good Clean Parts- 2629.+$15.00 shipping
  • Used. Offer #3 priced at $179.99 + $15.00 shipping estimate = $194.99* total. Primary Gears removed from a trident - RG9.+$15.00 shipping
  • Used. Offer #4 priced at $159.99 + $20.00 shipping estimate = $179.99* total. Primary Gear removed from a trident - RG8.+$20.00 shipping
  • New other (see details). Offer #5 priced at $32.90 + $9.35 shipping estimate = $42.25* total. Also fits Triumph Trident models ( & T160) from 1974-1976 Fits all Triumph 750 Unit Twins (Bonneville, T140, Tiger, TR7, Jubilee, T140D, T140E, TSS & TSX) from 1973-1982.+$9.35 shipping

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