fits model: T120, T140, 650, 750. make: Triumph. year: 1972.

( Manufacturer Part Number: 57-4392 ), ( Part Type: Gear )
The 57-4392 and 57-4391 gear lay shafts are essential components for the Triumph T120, T140, and T120C models produced in 1972. These high-quality parts are designed to ensure the smooth operation and longevity of your motorcycle's drivetrain.
The gear lay shafts, with a tooth count of 24, are precision-engineered to fit perfectly into your motorcycle's gearbox. Made from durable materials, these shafts can withstand the rigors of regular use, providing reliable power transmission from the engine to the rear wheel.
The 57-4392 and 57-4391 gear lay shafts feature a robust design, ensuring they can handle the torque and power produced by the Triumph T120, T140, and T120C engines. Their smooth finish reduces friction, minimizing wear and tear on other components and promoting optimal performance.
Replacing a worn-out gear lay shaft with these OEM (Original Equipment Manufacturer) parts guarantees a direct fit, ensuring a hassle-free installation process. By using genuine Triumph components, you can maintain the integrity of your motorcycle's drivetrain, ensuring it continues to run smoothly and efficiently.
In summary, the 57-4392 and 57-4391 gear lay shafts are essential upgrades for your Triumph T120, T140, or T120C. These high-quality, durable parts will improve your motorcycle's performance and reliability, ensuring you enjoy countless miles of riding pleasure.
The Triumph T120, T140, and T120C gear lay shaft with a 24t tooth count, specifically model number 57-4392/57-4391, is a part commonly used in classic Triumph motorcycles from the 1970s. Here are some pros and cons of buying this specific gear lay shaft:
Pros:1. Authenticity: This gear lay shaft is an original Triumph part, ensuring it fits perfectly in your T120, T140, or T120C.
2. Quality: Triumph is known for its high-quality components, and this part is no exception. It should provide reliable service.
3. Availability: As a common part, you should be able to find it in many motorcycle parts suppliers.
4. Replacement: If your current gear lay shaft is damaged or worn out, this part allows for a straightforward replacement.
Cons:1. Price: Original Triumph parts can be pricier than aftermarket alternatives.
2. Availability and lead times: Depending on the supplier, you might need to wait for it to be shipped to you.
3. Fitting issues: Although it is an original part, there could still be potential fitting issues due to wear and tear on other parts in the system.
Conclusion:If you value originality and want a reliable replacement part for your classic Triumph, the 57-4392/57-4391 gear lay shaft is a great choice. However, consider weighing the cost against the benefit of having an original Triumph part. If you're on a tight budget, an aftermarket alternative might be a more cost-effective option, as long as it fits properly and functions reliably.
I try to accurately describe used parts by listing any noticeable flaw.
I try my best to accurately list and describe parts merchandise, but i'm only human can't be right 100 of the time. Also, I can't possible please everyone with my opinion of condition used parts. The shipping cost listed is an estimate since now requires a be specified in listing.
Your actual cost could be less but will never more.
But there is always a chance I may overlook something. Items can be combined to save money even if they do not end on the same day.
1st gear layshaft 24t Triumph T120 650cc 650 cc T140 750cc 750 5 speed 1972 Bonneville Bonnie used oem nice for age shows very little wear information listed is based on my internet research.