1. USED Motorcycle/Scooter Clutches Items
  2. sku: 4675653746471721
  3. TRIUMPH T1221939

TRIUMPH T1221939 Starter Clutch Hub Sprag Gear Sprocket

fits model: T100, Bonneville. make: Triumph. year: 2009–2016.

T1221939 Triumph 09-16 Bonneville T100 Starter Clutch Hub Sprag Gear Sprocket

( Manufacturer Part Number: T1221939 ), ( Machine Type: Street Motorcycle ), ( Manufacturer Warranty: 1 Month ), ( Country/region Of Manufacture: United Kingdom ), ( Vintage Part: No )

Review TRIUMPH Starter Clutch Hub Sprag Gear Sprocket fits BONNEVILLE T100 2009–2016

The Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub is an essential component of the motorcycle's starting system. This clutch hub is specifically designed for Triumph Bonneville T100 models produced between 2009 and 2016.

The hub is engineered with a robust and durable design to ensure reliable operation. It houses the starter motor and the clutch system, which works in unison to enable the motorcycle to be started and to transmit power from the engine to the transmission.

The hub features a sprag gear and sprocket assembly. The sprag gear is a type of clutch that engages automatically when the engine starts rotating in the opposite direction to the transmission. This mechanism protects the starter motor from damage caused by the rotating transmission. The sprocket is the driving component that transfers the power from the engine to the transmission via the clutch.

The Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub is manufactured to meet the highest standards of quality and precision. Each component is meticulously inspected to ensure that it meets the exacting specifications of Triumph Motorcycles. The hub is also designed to be easy to install, making it an ideal choice for DIY enthusiasts or for professional mechanics working in a workshop environment.

In summary, the Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub is a critical part of the motorcycle's starting system. Its robust design, automatic engagement mechanism, and precision manufacturing make it an essential component for any Triumph Bonneville T100 produced between 2009 and 2016. Whether you're a DIY enthusiast or a professional mechanic, this clutch hub is an investment in the reliable operation and longevity of your motorcycle.

Pros and Cons of Buying a Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub, Sprag Gear, and Sprocket

Introduction:

The Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub, Sprag Gear, and Sprocket are essential parts of the motorcycle's engine system. Replacing these components can improve the performance, reliability, and longevity of your Triumph Bonneville T100. In this analysis, we will discuss the pros and cons of purchasing these parts.

Pros:

1. Improved Performance: New clutch hub, sprag gear, and sprocket can result in a smoother engagement between the engine and clutch, leading to better acceleration and overall performance.

2. Enhanced Reliability: Worn-out or damaged parts can cause various issues, including engine stalling and poor fuel economy. Replacing these parts with genuine Triumph components ensures reliability and longevity.

3. Enhanced Safety: A faulty starter clutch hub, sprag gear, or sprocket can cause the motorcycle to malfunction, potentially leading to accidents. Upgrading these parts helps maintain the safety of your motorcycle.

4. OEM (Original Equipment Manufacturer) Parts: Genuine Triumph parts are specifically designed for your motorcycle model. They ensure proper fitment, function, and compatibility, which can save you time and money in the long run.

Cons:

1. Cost: New OEM parts can be expensive compared to aftermarket or used parts. However, the cost is offset by the improved reliability, safety, and performance.

2. Installation Complexity: Installing these parts can be a challenging process, especially for those who lack mechanical expertise. You may consider hiring a professional mechanic to ensure proper installation.

3. Availability: Depending on your location, availability of these parts may be an issue. It is advisable to order the parts well in advance to avoid potential delays.

Conclusion:

In conclusion, buying the Triumph T1221939 09-16 Bonneville T100 Starter Clutch Hub, Sprag Gear, and Sprocket comes with several advantages, such as improved performance, enhanced reliability, and increased safety. However, the high cost and installation complexity are the main disadvantages. Considering the long-term benefits, we recommend investing in genuine Triumph OEM parts for your Bonneville T100. If you are unsure about the installation process, it is wise to consult a professional mechanic to ensure proper installation.

Details:

See all pics-you get this exact item. Part Brand: Genuine Triumph part. Condition notes: Good condition. Donor machine: 2009 Bonneville with 27,844 miles.

Mounted / tested fine. You can expect your calls, texts and messages to be answered within our open hours.

part #: t1221939 prices

  • $159.91-$470.86

specifications scookit:

  • for models: T100, Bonneville
  • for makes: Triumph
  • for years: 2009-2016
  • mpn: T1221939
  • machine type: Street Motorcycle
  • manufacturer warranty: 1 Month
  • country/region of manufacture: United Kingdom
  • vintage part: No

shipping scookit:

  • cost: $6.99
  • type: Fixed
  • class: Standard, Expedited
  • transit: 5-12 Days
  • carrier: USPS
  • service: USPS Ground Advantage, USPS Priority Mail

returns scookit:

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

general scookit:

  • condition: Used
  • Transmission Drivetrain > Clutch Parts Kits > Complete Clutches Kits

seller scookit:

  • city: Union, Missouri
  • # reviews: 31178
  • rating: 99.7%

offer scookit:

  • options: Ship-to-home
  • started: June 13, 2025
  • availability: In Stock
  • sold: 0
  • quantity: 1

payments scookit:

  • other
  • check
  • credit card: Discover
  • wallet: Paypal
  • cash
for models: t100, bonneville, for makes: triumph, for years: 2009-2016, machine type: street motorcycle, manufacturer warranty: 1 month, country/region of manufacture: united kingdom, vintage part: no,
category: auto parts > transmission drivetrain > clutch parts kits > complete clutches kits, sku: 4675653746471721,

Triumph T1221939 Is Similar To:

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