Shimano BB-UN300 Square Taper Bottom Bracket

Item number: 76645
5
5
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x110
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x113
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x122.5
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x117.5
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x117.5
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x117.5
BB-UN300 Square Taper Bottom Bracket - universal/BSA 68x117.5
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Shimano square taper bottom bracket BB-UN300 - different axle lengths, for BSA bottom bracket


The BB-UN300 square taper bottom bracket was launched by Shimano as successor of the models BB-UN26 and BB-UN55. It covers a wide range of applications, from Touring and City bikes to older Road and Mountain bikes. BB-UN300 is available with BSA thread and in different axle lengths. In this type, the bottom bracket axle and crank are connected by a square taper. The delivery does not include crank bolts.

Specifications:

Application:
City, Touring, Road, All Mountain, Cross Country
Type:
BSA
Shell Width:
68 mm
Axle Length:
110 mm, 113 mm, 117.5 mm, 122.5 mm
Axle Type:
square taper (JIS)
E-Type Compatibility:
no
Chaincase Compatibility:
no

Technical Information:

Bearings:
steel
Axle Material:
steel
Bottom Bracket Cup Material:
aluminium (left), aluminium / steel (right)

Compatibility:

  • for all cranks with JIS square mount

Recommended for:
  • FC-M311, FC-M315, FC-M351, FC-M361, FC-M371, FC-M430
  • FC-M2000, FC-M3000
  • FC-T3010
  • FC-MT100
  • FC-RS200
  • FC-TY301, FC-TY501, FC-TY701
  • FC-TX801
  • FC-A070, FC-A073

Models:

BSA 68x110:
Threads:
BSA
Shell Width:
68 mm
Axle Length:
110 mm
Manufacturer Number:
E-BBUN300B10X

BSA 68x113:
Threads:
BSA
Shell Width:
68 mm
Axle Length:
113 mm
Manufacturer Number:
E-BBUN300B13X

BSA 68x117.5:
Threads:
BSA
Shell Width:
68 mm
Axle Length:
117.5 mm
Manufacturer Number:
E-BBUN300B17X

BSA 68x122.5:
Threads:
BSA
Shell Width:
68 mm
Axle Length:
122.5 mm
Manufacturer Number:
E-BBUN300B22X

Contents:

  • 1 x Shimano BB-UN300 bottom bracket


Models:

  • universal/BSA 68x110, out of stock
    9.51€
  • universal/BSA 68x113, out of stock
    8.65€
  • universal/BSA 68x117.5, in stock
    10.38€
  • universal/BSA 68x122.5, out of stock
    8.65€

Customer Reviews (5)

5

Customer Reviews (5)

5.0/5.0
5
5
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0
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1
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Give us your opinion on this product.

by Tilman K.  on 21.09.2022
verified purchase

Preis Leistung ist top, aber ich habe schon mehrere davon verschlissen, weil sie mit Regenwasser in Berührung gekommen sind. Aber da das auch die teuren nicht überleben,
ist dieses hier perfekt. Also am besten, den Regen zügig abtrocknen lassen und nachfetten.

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by Mario W.  on 20.06.2022
verified purchase

Lies sich gut und ohne Probleme in mein Retro MTB einbauen.Qualität ist Super.Dank superschnellen Versand konnt ich 2 Tage später wieder fahren.Vielen dank an das BC Team.Immer gerne wieder

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by Uwe S.  on 14.06.2022
verified purchase
0 of 1 customers found this review helpful.

Top1000

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by Adriana M.  on 13.10.2020
verified purchase
0 of 2 customers found this review helpful.

Alles top!

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by Felix H.  on 30.07.2020
verified purchase
0 of 1 customers found this review helpful.

Top.

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