SHIMANO BB-UN91 Xtr Bottom Bracket Triple Crankset M900 107 1.37

( Brand: Shimano ), ( Manufacturer Part Number: BB-UN91 ), ( Part Type: Bottom Bracket ), ( Shell Width: 73 Mm ), ( Color: Silver ), ( Bottom Bracket Shell Type: Bsa ), ( Material: Aluminum, Steel ), ( Item Length: 107 Mm ), ( Spindle Type: Square Taper Jis ), ( Compatible Bike Type: Mountain Bike, Cyclocross Bike, Universal, City Bike, Cruiser, Dirt Jumper, Downhill Bike, Fitness-/crossbike, Gravel Bike, Hardtail Bike, Hybrid Bike, Racing Bike, Touring Bike, Trekking Bike ), ( Country/region Of Manufacture: Japan )

Review SHIMANO Xtr Bottom Bracket Triple Crankset 107 1.37 Vintage

The Shimano BB-UN91 XTR bottom bracket M900 triple crankset is a high-performance component designed for serious cyclists. This bottom bracket is part of Shimano's XTR groupset, known for its exceptional quality, durability, and performance.

The BB-UN91 is a press-fit bottom bracket, specifically designed for use with Shimano's M900 triple crankset. It features a 107mm Bolt Circle Diameter (BCD) and a 1.37 inch spindle, making it compatible with a wide range of Shimano cranksets and frames.

The BB-UN91 is made from high-quality materials, including sturdy steel bearings for smooth and efficient pedaling. The bearings are sealed to protect them from dirt, debris, and moisture, ensuring long-lasting performance and minimal maintenance. The bottom bracket also features Shimano's unique cup-and-cone design, which provides excellent bearing adjustment and ensures optimal bearing alignment.

The M900 triple crankset that this bottom bracket is designed to work with is also a high-performance component. It features a 53/39/30 tooth chainring configuration, providing a wide range of gears for tackling various terrains and gradients. The crankset is made from lightweight and strong aluminum alloy, and it features Shimano's Hollowtech II technology, which reduces weight while maintaining strength and stiffness.

In conclusion, the Shimano BB-UN91 XTR bottom bracket M900 triple crankset is a high-performance component that is ideal for serious cyclists who demand the best in terms of durability, performance, and reliability. Its press-fit design, sealed bearings, and cup-and-cone design ensure smooth and efficient pedaling, while the M900 triple crankset provides a wide range of gears for tackling various terrains. Whether you're a weekend warrior or a professional racer, this bottom bracket and crankset combination is sure to meet your needs.

1. High-quality materials: Shimano is known for its durable and high-quality components, and this crankset is no exception. It is made from strong and lightweight materials, ensuring long-lasting performance.

2. Smooth and efficient shifting: The M900 triple crankset is designed to provide smooth and efficient shifting, making it easy to change gears even under heavy loads.

3. Wide gear range: With a triple crankset, you have a wider gear range to choose from, making it easier to tackle steep climbs and fast descents.

4. Compatibility: The Shimano BB-UN91 XTR bottom bracket is compatible with various frame sizes and types, making it a versatile option for many cyclists.

1. High price point: As a high-end component, the Shimano BB-UN91 XTR bottom bracket and M900 triple crankset are more expensive than many other options on the market.

2. Weight: Despite being made from lightweight materials, the triple crankset is heavier than a standard double crankset, which may impact your bike's overall weight and performance.

If you are a serious cyclist who values high-quality components and a wide gear range, the Shimano BB-UN91 XTR bottom bracket M900 triple crankset 107 1.37 24 is a great option. However, it is a significant investment, and you should consider whether the additional cost is worth the performance benefits for your riding style and needs.

If you are looking for a high-quality triple crankset that offers smooth and efficient shifting and a wide gear range, the Shimano BB-UN91 XTR bottom bracket M900 triple crankset 107 1.37 24 is a recommended option. However, if you are on a budget or prefer a lighter weight setup, you may want to consider other options that better fit your needs and budget.

Details:

Shimano XTR BB-UN91 bottom bracket in 107mm width , 1.37 x24 TPI English threads. Threads and splines in good shape. For 73mm shells. Cartridge shows cosmetic wear, discoloration etc.

Bearings spin smoothly. Pre owned condition. This was original spec with the XTR M900 group. Orders always ship quickly, next day USPS Priority.

part #: bbun91 prices

• $46.26-$109.00

specifications ribicycl:

• brand: Shimano
• mpn: Bb-un91
• part type: Bottom Bracket
• shell width: 73 Mm
• color: Silver
• bottom bracket shell type: Bsa
• material: Aluminum, Steel
• item length: 107 Mm
• spindle type: Square Taper Jis
• compatible bike type: Mountain Bike, Cyclocross Bike, Universal, City Bike, Cruiser, Dirt Jumper, Downhill Bike, Fitness-/crossbike, Gravel Bike, Hardtail Bike, Hybrid Bike, Racing Bike, Touring Bike, Trekking Bike
• country/region of manufacture: Japan

shipping ribicycl:

• transit: 5-9 Days
• carrier: USPS
• type: Fixed
• class: Expedited
• service: USPS Priority Mail
• cost: $8.75

returns ribicycl:

• paid by: Buyer
• method: Money back
• time: 30 Days
• policy: Returns Accepted

general ribicycl:

• Cycling > Bicycle Components Parts > Bottom Brackets
• condition: Used

payments ribicycl:

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

seller ribicycl:

• rating: 100.0%
• # reviews: 2225
• city: Milwaukee, Wisconsin

offer ribicycl:

• options: Ship-to-home
• started: November 1, 2024
• availability: In Stock
• quantity: 1
• sold: 0

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