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Shimano Bottom Bracket Bb-un300 Square Spindle 68 X 123mm

bicyclepartswholesale (228)

100% positive feedback

Price:

$19.99

Free shipping

Estimated delivery Thu, Jun 26 - Mon, Jun 30

Returns:

No returns, but backed by eBay Money back guarantee.

Condition:

New

MTB DOUBLE BOTTOM BRACKET, BB-UN300, SPINDLE: SQUARE TYPE, SHELL: BSA 68MM, SPINDLE: 122.5MM (LL123), W/O FIXING BOLT. 68 x 122.5 mm. Square Taper.

BrandShimano

GTIN0192790619255

UPC0192790619255

eBay Product ID (ePID)10039851812

Spindle TypeSquare Taper - JIS

ColorBlack

Shell Width68 mm

Bottom Bracket Shell TypeBSA (English)

Compatible Bike TypeRoad Bike, Cruiser, Hybrid Bike, Mountain Bike, Touring Bike

Part TypeBottom Bracket

MaterialAluminum, Steel

ModelBB-UN300 Bottom Bracket

Item HeightBSA

Length5.39

Item Weight1.0000

4.0

3 product ratings

Would recommend

Good value

Good quality

by pseudocoo
Sep 15, 2022
OK on a budget, but higher quality BB's are available. "You get what you pay for"!
Pros - Priced right. Turns smoothly. Cons - Bearings are smaller than other BB's. Aluminum caps are soft and easily dinged. Chinese knock-off tool does not fully engage the 20 notches in the caps - Park tool works OK. The "K" version comes with a spacer on the drive side that needs to be removed for normal use. Shell cavity must be free of any protrusions such as screw tips from cable guides, or tube ends that protrude into the shell cavity. Axle is solid (heavy). This is not typical of Shimano quality! If you are replacing a sealed bearing BB, installation should be straight forward. Recommend a higher quality unit unless there are budget constraints.
Verified purchase: YesCondition: New
by bren_2907
Feb 16, 2021
Shimano BB
Upgraded my 1991 Trek 720. BB is exact fit. Good product.
Verified purchase: YesCondition: New