SKI-DOO 412-1021 Triple Chain Pitch Links Pins 640 3/8

( Brand: Ski-doo ), ( Manufacturer Part Number: 412-1021 ), ( Part Type: Chain Pin )

Review SKI DOO Vintage 640 Triple Chain 3/8 Pitch Links Pins 412 1021 fits TNT 400 1972–1990

Introducing the Ski-Doo TNT 640 from the iconic 1972 model year, featuring the part number 412-1021. This piece is a vital component of the ski-doo's drive system, specifically a tripled-chain with a 3/8 pitch, 90 links, and pins.

The Ski-Doo TNT 640 is an essential component for any snowmobile enthusiast or repair shop, maintaining the legacy and performance of this classic, powerful machine. This 3/8 pitch, 90-link, tripled-chain assembly with pins is intended for use on the model 412-1021 of the Ski-Doo TNT 640, created in 1972.

For those unfamiliar, a tripled-chain drive system uses three chains instead of the more standard two-chain configuration. The added chain enhances durability, longevity, and efficiency of the drive system, ideal for the demanding conditions of winter riding. The 3/8 pitch designates the size of the links in the chain, which in this case, offers increased strength and reliability. The 90 links represent the total number of these power-transmitting components, connecting key elements of the snowmobile's engine and drive mechanism. In contrast, the pins are the cylindrical, securing components in between the chains; they assist in holding everything together and ensuring smooth and consistent chain movement.

This 1972 Ski-Doo 412-1021 TNT 640 3/8 pitch, 90-link tripled-chain assembly with pins is a pristine example of the attention to detail and high-quality engineering that characterized Ski-Doo snowmobiles during this era. Each link and pin is meticulously crafted for optimal durability and performance, ensuring that your Ski-Doo remains a reliable and unstoppable snow-conquering machine. Whether a seasoned snowmobiler or someone just starting out, this component is an essential investment in preserving the integrity and legacy of the iconic Ski-Doo TNT 640 model.

Pros and Cons of Buying a Ski-Doo 412-1021 1972 TNT 640 Snowmobile

The Ski-Doo 412-1020 1972 TNT 640 is a classic, high-performance snowmobile with a 640cc engine and a triple chain drive system with 90 pitch 3/8 inch pins. Here are some potential pros and cons that could influence your decision to buy this model:

1. Powerful Engine: The 640cc engine on the Ski-Doo TNT 412-1021 is known for its power and reliability. This engine size was popular in its time and continues to be sought after by collectors and enthusiasts.

2. Triple Chain Drive System: The triple chain drive system provides excellent power transfer and overall performance. It also allows for efficient use of the engine's power.

3. Classic Design: This model is a classic snowmobile, making it desirable for collectors and those who appreciate the history of the sport.

4. Upgradable: With a well-maintained engine and updated parts, this snowmobile can be upgraded to improve its performance and adaptability to modern conditions.

1. Age and Maintenance: This is a vintage snowmobile, and with age comes increased maintenance requirements. Parts may be harder to find, and replacements may be expensive.

2. Limited Modern Features: Older snowmobiles lack many of the modern features and technologies that are standard on newer models. This could include things like electric starting, reverse gear, or digital instrumentation.

3. Limited Comfort: Compared to modern snowmobiles, the Ski-Doo TNT 412-1021 offers limited comfort features. This could include a basic seat and minimal wind protection.

4. Fuel Efficiency: Older engines tend to be less fuel-efficient than modern ones. This is something to consider, especially if you plan on using the snowmobile extensively.

The Ski-Doo 412-1021 1972 TNT 640 is a powerful, classic snowmobile that offers a unique experience for those who appreciate history and raw power. However, it comes with increased maintenance requirements, limited modern features, and less fuel efficiency compared to newer models. If you're a collector, enthusiast, or just looking for a fun, vintage snowmobile, this model could be a great fit. Otherwise, you may want to consider a newer, more modern model with more comfort and convenience features.

If you're set on buying a classic snowmobile, the Ski-Doo 412-1021 1972 TNT 640 could be an excellent choice. However, make sure you're prepared for the increased maintenance requirements and limited modern features. Research local snowmobile shops and suppliers to ensure you have access to parts and services. Additionally, consider a restoration or upgrade plan to breathe new life into this classic machine.

Details:

Nice hard to find triple chain in good shape.

part #: 4121021 price

• $79.99

specifications enginesnowmobile:

• for models: Tnt, 400
• for makes: Skidoo, Ski-doo
• for years: 1972-1990
• brand: Ski-doo
• mpn: 412-1021
• part type: Chain Pin

offer enginesnowmobile:

• best offers: True
• availability: In Stock
• started: January 16, 2025
• quantity: 1
• options: Ship-to-home
• sold: 0

general enginesnowmobile:

• condition: Used
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

payments enginesnowmobile:

• other
• wallet: Google-pay
• credit card: Diners-club

shipping enginesnowmobile:

• carrier: USPS
• service: USPS Ground Advantage
• cost: $5.09
• transit: 6-12 Days
• class: Standard
• type: Calculated

seller enginesnowmobile:

• # reviews: 139
• rating: 100.0%
• city: White Pigeon, Michigan

returns enginesnowmobile:

• policy: No Returns

Ski-doo 412-1021 Is Similar To:

• 420923595 420923595 Ski-doo 09 550 Fan (31.3% similar) ...(January 23rd, 2018)
• 504151767 Lid 0800371005 504151767 0800371005 Ski-doo Chaincase (27.7% similar) I am selling a Ski-doo chain case lid this part came off running sled that we parted out...(November 15th, 2017)
• 0000 Ski-doo 1995 95 Ski (28.6% similar) ...(April 3rd, 2017)
• 000000 Ski-doo Skidoo Snowmobile Xp (21.5% similar) ...(July 29th, 2017)
• 003sds600apgk Spi Winderosa 2003 Ski-doo (19.3% similar) Brand new top end rebuild kit. Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Hard anodized crowns are 75 stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon molybdenum ...(August 6th, 2017)
• 008ssua600drtek Spi Winderosa 2008 Ski-doo (19% similar) Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Pistons are for the standard bore 72MM. MOS2 Teflon molybdenum coated skirts perform at the highest standards, reducing friction and heat for added power longevity. Hard anodized crowns are 75 ...(October 9th, 2017)
• 01.5699.00 Pro X Ski-doo Piston (23.8% similar) A set of pistons for skidoo 600 twin. Make sure it fit your snowmobile before biding...(February 16th, 2018)
• 013sxrs6etek Spi Winderosa 2013 Ski-doo (20.9% similar) Hard anodized crowns are 75 stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon molybdenum coated skirts. Sip pistons feature the following: high-silicon content hyper eutectic cast aluminum material for less heat expansion, ...(February 17th, 2018)
• Magneto Flywheel Magnets 340 Ski 0212416034 Tnt Doo 1976 Wheel Fly Rotor Bosch (24.3% similar) Has been media blasted clean. We answer all questions. They may not be clean. 1 mile south of town on m 19. They may have some dents, scratches, cracks and or missing pieces. Our address is. Magnets have pull. They may need some repairs. West side of the road. They will not look like new parts. They...(February 19th, 2015)
• 0221500800 Ski-doo Coils 6 Nordic Olympique Rotax Elan Vintage 70 Engine Tnt (19.9% similar) These are sold as is. Will get parts as pictured. Check pictures to make sure you are OK with condition before buying. They do not look melted or anything so I think all or most should work. May fit others also. Used parts are normally dirty so expect them to have some grease, grime and or rust on ...(March 3rd, 2015)
• 023sdl600setek Spi 2002-2003 Ski-doo Legend (20.3% similar) MOS2 Teflon molybdenum coated skirts perform at the highest standards, reducing friction and heat for added power longevity. Pistons are for the standard bore 76MM. Includes 2 sip pistons, rings, wrist pins, cir clips, pin needle bearings, and a top end gasket kit. Features machined, smooth piston ...(February 12th, 2018)