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Shimano
Shimano BB-UN300 Square Taper Bottom Bracket – BSA 68 x 123mm
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Shimano BB-UN300 Square Taper Bottom Bracket – BSA 68 x 123mm
Electrify NZ Auckland - North Shore
100 Don McKinnon Drive
Albany
AUK
Auckland 0632
New Zealand
Electrify NZ Christchurch
23 Elgin Street
Sydenham
CAN
Christchurch 8023
New Zealand
Electrify NZ Dunedin
249B Cumberland St
Central Dunedin
OTA
Dunedin 9016
New Zealand
Electrify NZ Hamilton
43 Massey Street
Frankton
WKO
Hamilton 3204
New Zealand
Electrify NZ Hawkes Bay
244 Gloucester St
Taradale
HKB
Napier 4112
New Zealand
Electrify NZ Nelson
1/76 Vanguard Street
Nelson
NSN
Nelson 7010
New Zealand
Electrify NZ Tauranga
Fashion Island Shopping Centre
Papamoa Beach
BOP
Tauranga 3118
New Zealand
Electrify NZ Wellington
89a Thorndon Quay
Pipitea
WGN
Wellington 6011
New Zealand
The Shimano BB-UN300 is a durable square taper cartridge bottom bracket designed for smooth, reliable performance on MTB, trekking and commuter bikes. Featuring a sealed cartridge bearing design, it provides long service life with minimal maintenance. This model suits a 68mm English (BSA) threaded bottom bracket shell with a 123mm spindle.
Features
- Genuine Shimano cartridge bottom bracket
- Sealed bearing design
- Square taper (JIS) spindle
- Smooth, low-maintenance operation
- English (BSA) threaded
- Ideal for MTB, hybrid and commuter bikes
Specifications
- Model: BB-UN300
- Part Number: EBBUN300B23X
- Bottom Bracket Shell Width: 68mm
- Thread: BSA (1.37" x 24 TPI)
- Spindle Length: 123mm
- Interface: JIS Square Taper
- Colour: Black
