YAMAHA 90387-201R7-00 Big Crankshaft Balance Shaft Collar

( Manufacturer Part Number: 90387-201R7-00 ), ( Type: Crankshaft Balancer )

Review YAMAHA Big Crankshaft Balance Shaft Collar fits BEAR 350 1990

The Yamaha 90387-201r7-00 crankshaft balance shaft collar is an essential component for the Big Bear 350 ATV model manufactured by Yamaha in 1990. This collar is specifically designed to enhance the engine's performance and durability by reducing vibrations caused by the crankshaft's reciprocating motion.

The collar is engineered from high-quality materials, ensuring it can withstand the rigors of off-road use. Its precise dimensions and shape enable it to fit perfectly onto the crankshaft, ensuring a secure and snug fit. The collar's outer surface is finished with a durable coating that provides resistance to wear and tear, preventing potential damage to the engine.

The collar features two balance shafts that are designed to counteract the primary and secondary forces generated by the crankshaft. The balance shafts rotate at twice the engine speed, counteracting the engine's reciprocating motion and reducing vibrations, resulting in a smoother and more stable riding experience.

This component is essential for maintaining the overall performance and longevity of the engine. Its installation is straightforward, and it can be easily replaced if needed. The collar comes with all necessary hardware for installation, ensuring a hassle-free experience for the user.

In summary, the Yamaha 90387-201r7-00 crankshaft balance shaft collar is a critical part for the 1990 Big Bear 350 ATV engine. Its design and construction enhance engine performance, reduce vibrations, and ensure longevity. Its installation is straightforward, and it comes with all necessary hardware for a hassle-free experience.

Pros and Cons of Buying Yamaha 90387-201R7-00 Crankshaft Balance Shaft Collar for a 1990 Big Bear 350

a. Improved Engine Performance: The crankshaft balance shaft collar can help reduce vibrations and improve the overall performance of the engine.

b. Enhanced Rider Comfort: By reducing engine vibrations, the rider's experience becomes more comfortable, especially during long rides.

c. Potential Cost Savings: If the balance shaft is not working correctly, replacing the collar may be more cost-effective than replacing the entire balance shaft assembly.

a. Cost: The price of the Yamaha 90387-201R7-00 crankshaft balance shaft collar is relatively high, making it a significant investment for some riders.

b. Installation Complexity: Installing the collar requires a certain level of mechanical expertise and access to specialized tools, which may be a challenge for some.

The decision to buy the Yamaha 90387-201R7-00 crankshaft balance shaft collar for a 1990 Big Bear 350 depends on various factors, including the current condition of the engine, the rider's budget, and their mechanical expertise. If the engine is experiencing noticeable vibrations, and the rider is willing to invest in a potential performance improvement and increased comfort, then replacing the crankshaft balance shaft collar could be a worthwhile investment. However, if the budget is tight, or the rider lacks the necessary mechanical skills, they may want to consider alternative solutions or seek professional advice before making a purchase.

Before purchasing the Yamaha 90387-201R7-00 crankshaft balance shaft collar, it's essential to assess the current condition of the engine and consult with a qualified mechanic to determine if this is the best solution for your specific situation. If the mechanic recommends this part and the rider is comfortable with the investment and installation process, then proceeding with the purchase could lead to improved engine performance and rider comfort.

part # 90387201r700 prices

• $9.95-$19.99

specifications atvsienna:

• for models: 350, Bear
• for makes: Yamaha
• for years: 1990
• manufacturer part number: 90387-201R7-00
• type: Crankshaft Balancer

shipping atvsienna:

• type: Fixed
• service: Standard
• transit: 3-7 Days
• class: Standard
• cost: $0.00

seller atvsienna:

• rating: 99.7%
• # reviews: 778

payments atvsienna:

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

returns atvsienna:

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

offer atvsienna:

• started: March 2, 2026
• best offers: True
• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock

general atvsienna:

• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
• condition: Used

Yamaha 90387-201R7-00 Is Similar To:

• Yamaha 5tg-25381-00-00 2004 Yfz450 Rear Wheel Axle Drive Shaft Extended Adjustable Aftermarket (40% similar) $79.00–$129.95. (August 23rd, 2024)
• Yamaha 37f-18101-02-00 Blaster Oem Transmission Shift Shaft 88-06 Yfs200 (49% similar) $39.99–$199.99. (August 28th, 2024)
• Yamaha 4gb-11638-00-00 2005 Big Bear 400 4x4 Piston Oem#4gb-11638-00-00 2407 L-3 (41.1% similar) $22.95–$98.50. (August 29th, 2024)
• Yamaha 4kb-22591-00 Big Bear Kodiak Wolverine Rear Swingarm Drive Shaft Flex Boot Large Clamp (47.6% similar) $22.99–$67.99. (August 31st, 2024)
• Yamaha 4kb-17521-00-00 00 Wolverine 350 4x4 Transmission Bevel Gears Output Shaft Yfm350fx (46% similar) $25.58–$47.16. (September 1st, 2024)
• Yamaha 4kb-13447-00-00 00 Big Bear 400 4x4 Oil Filter Cover Yfm400f (50.7% similar) $19.95–$40.00. (September 3rd, 2024)
• Yamaha 1uy-13300-00-00 00 Big Bear 400 4x4 Oil Pump Yfm400f (44.6% similar) $74.99–$169.95. (September 3rd, 2024)
• Yamaha 4kb-16150-00-00 2005 Big Bear 400 4x4 Driven Clutch Oem#4kb-16150-00-00 2407 L-3 (39.2% similar) $32.95–$74.99. (September 3rd, 2024)
• Yamaha 1uy-15723-00-00 1987-2014 Big Bear Kodiak Grizzly Warrior 350 400 450 Starter Pulley (44.4% similar) $9.99–$99.98. (September 3rd, 2024)
• Yamaha 2hc-46172-00-00 Yxz 1000 Eps 16 Drive Shaft 2016-2018 1000r 2017 (39.4% similar) $395.44. (September 4th, 2024)
• Yamaha 5lp-11400-00-00 Raptor 660 Oem Crankshaft Crank Shaft And Connecting Rod Fast Ship (51.3% similar) $149.99–$319.99. (September 5th, 2024)