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SHIMANO UN300 BOTTOM BRACKET ENGLISH 68x122.5mm SQUARE TAPER

SHIMANO UN300 BOTTOM BRACKET ENGLISH 68x122.5mm SQUARE TAPER

Q: The tittle says 110 mm long but the image says 123, shall I trust its a 110mm ?

Different lengths may be available depending on the part number chosen. The same image may be used for multiple products of similar type.

Q: Is this equal to a shiman0 un26, 68x127,5mm bottom bracket.

Please watch RJ the bike guy's How To Upgrade Vintage Bike With Sealed Cartridge Bottom Bracket in YouTube

Q: Will this fit a mongoose sycamore 26in mountain bike

when you remove the old one read the dimensions on the bb. you can even take a measuring tape and measure the hole. don't throw away the used one until the new one is found and installed. maybe youtube your bike repair.

Q: How much does this bottom bracket weigh?

Amazon’s specs say .29 Kg. As the package weight. The packaging would not be significant.

Product ID: 390978403

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🔩Durable cartridge bearing system

⚙️Precision square taper fit

🛠️Aluminum adapter for lightweight strength

Frequently Bought Together

SHIMANO Square Type Bicycle Bottom Bracket - BSA 68MM, Spindle: 122.5MM - EBBUN300B22X

BIKEHAND Bike Bicycle Compatible with Shimano Bottom Bracket Removal Remover Tool

Park Tool PolyLube 1000 Bicycle Grease

Description

⚙️ Upgrade your ride with Shimano’s precision power!

BUILT TO LAST - High-performance cartridge bearing ensures long-lasting durability
LIGHTWEIGHT STRENGTH - Aluminum adapter material balances durability with minimal weight
TAILORED FIT OPTIONS - Choose from Standard, E-type, or chain case structures to match your ride
TRUSTED SHIMANO ENGINEERING - Backed by Shimano’s legacy of precision cycling components
ROCK SOLID CHAINLINE STABILITY - Enhanced chainline stabilizer for smooth, reliable pedaling

The SHIMANO UN300 Bottom Bracket features a robust cartridge bearing with a square taper design, optimized for English 68x122.5mm frames. Crafted with an aluminum adapter and multiple structure options, it delivers superior chainline stability and durability, making it a reliable choice for serious cyclists seeking performance and longevity.

Specifications

Batteries Included	No
Brand	SHIMANO
Material Type	Aluminium
Number of Items	1
Manufacturer	Shimano Cycling

Have a Question? See What Others Asked

The tittle says 110 mm long but the image says 123, shall I trust its a 110mm ?

Is this equal to a shiman0 un26, 68x127,5mm bottom bracket.

Will this fit a mongoose sycamore 26in mountain bike

How much does this bottom bracket weigh?

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