This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
in 13 offers
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
Size
Last updated at 06/11/2025 04:14:34
Shimano Square Type Bottom Bracket 68 x 122.5mm w-o Bolts - BB - UN300
Delivery between 8–18 Nov $12.94
SHIMANO,68-122.5 mm E-Type,EBBUN300EB23X BB-UN300 Bottom Bracket British Thread, 68-122.5 mm (LL123) - for E-Type FD
Shimano BB-UN300 BSA square bottom bracket Version 68 x 122.5 mm
Delivery between Fri – Mon $42.63
Shimano Bb-Un300 Bottom Bracket 73x122mm w/Fixing Bolt
Delivery between 7–14 Nov $9.99
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 113mm
Free delivery
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 110mm
Delivery $10
Shimano Bottom Bracket, BB-UN300, Square Taper, BSA Threaded - 68x107mm
Delivery between 12–18 Nov $10
See 84 historical offers
Shimano UN300 English Bottom Bracket 73 x 113mm
Delivery between 11–19 Nov $10
Shimano BB-UN300 73x118mm XL Bottom Bracket w/o Fixing Bolts
30-day returns
SHIMANO BB-UN300 Bottom Bracket - English, 68 X 110mm Spindle, Square Taper JIS
Delivery $30.26
Shimano Unisex's BBUN300C23 Wheels, Silver, 73-122 mm
Free delivery between 11–14 Nov
Shimano Tourney Bb-un300 Mtb Bike Square Type Bottom Bracket 68mm Un26
Delivery $6.63
Shimano Bb-un300 Bottom Bracket - English, 73 X 118mm Spindle, Square
Delivery $39.00
Shimano Bb-un300 Bottom Bracket — Square Taper / Bsa / 68 X 118mm
Free delivery
Shimano Bb-un300 Bottom Bracket - English, 73 X 118mm Spindle, Square
Delivery $38.90
Shimano Un300 Bottom Bracket Bike Cycle Bicycle Bb Square Taper Sealed
Free delivery
Shimano BB-UN300 British Thread Bottom Bracket
Delivery between 11–14 Nov $30.56
Shimano Bb-un300 Square Taper Bottom Bracket - 107 To 127mm - 68/73mm
Free delivery
Shimano Shimano BB-UN300 Bottom Bracket 73x122mm w/Fixing Bolt
Delivery $19.99
Shimano Bottom Bracket Un300 68 X 118mm Square Taper Bb British Thread
Free delivery
SHIMANO unisex - adult 68/122.5mm bottom bracket, black, one size
Free delivery
Shimano BB-UN300 Bottom Bracket 73x113mm LL w/o Fixing Bolts
Delivery $15
Shimano Bb-un300 Bottom Bracket - English, 68 X 113mm Spindle, Square
Delivery $32.57
Shimano BB-UN300 Standard Bottom Bracket
Free delivery between 7–13 Nov
Shimano BB-UN300 Bottom Bracket 68 x 118 mm / Without fixing bolt
Delivery $19.95
Shimano BSA 127.5/68mm BB-UN300 Square Chaincase Bottom Bracket
Delivery $70.99
Shimano BB-UN300 BOTTOM BRACKET 73x118mm LL w/o FIXING BOLTS
Delivery $9.95
Shimano MTB DOUBLE BOTTOM BRACKET, BB-UN300 - 73mm
Delivery between 12–15 Nov $19.99
Shimano Bb-un300 Bottom Bracket 68x127.5mm W/ Fixing Bolts
Delivery $9.90
Shimano UN300 Bottom Bracket 68x122.5 | Grey
Delivery between 10–18 Nov $9.50
Bottom Bracket Shimano BB-UN300 68x127.5mm (Crank bolts NOT included)
Delivery $15.64
Shimano Bb-un300 Bottom Bracket 73x122mm W/fixing Bolt | Melbourne Powered
Free delivery between 6–17 Nov
SHIMANO BB-UN300 BOTTOM BRACKET 68X122.5MM W/OBOLTS FC-TY701
Delivery between 7–15 Nov $15
Shimano BB-UN300 Square type 122.5mm Bottom Bracket
Delivery $12.95
Shimano BB-UN300 Bottom Bracket 68 x 113mm
Delivery between 5–17 Nov $12.95
Shimano Shimano UN300-K 68 x 117.5mm Bottom Bracket
Delivery between 11–17 Nov $15
Shimano Bb-Un300 Bottom Bracket - 68X122.5MM - SUPER SALE
Delivery between 10–18 Nov $9.95
Shimano BB-UN300 Bottom Bracket 68x110mm w/o Fixing Bolts (Square Taper)
Delivery between 10–18 Nov $12
Shimano Bottom Bracket Square taper BB-UN300 (w/o fixing bolts) - 68x115mm
Shimano BB-UN300 Square Taper Bottom Bracket 73mm / 113mm
Delivery between 10–14 Nov $12.90
Shimano Shimano, Cartridge Bottom Bracket Set BB-UN300-K, Spindle: Square-type , Shell: BSA 68mm, Spindle: 110mm, w/o Fixing Bolt
Delivery $69.45
Shimano Bb-Un300 Bottom Bracket - 68X122.5MM - SUPER SALE
Delivery between 10–12 Nov $9.95
Shimano BB-UN300 Bottom Bracket — Square Taper / BSA / 68 x 118mm
Delivery between 10–18 Nov $8
Shimano BB-UN300 Road Bike Bottom Bracket 68x113mm w/o fixing bolts
Delivery between Thu – Mon $10
Bottom Bracket Shimano BB-UN300 Square Taper 68mm 123mm
30-day returns
Shimano Shimano, BB-UN300 Bottom Bracket 68x115mm w Bolts
Shimano BB-UN300 Bottom Bracket 73x113mm LL w/o Fixing Bolts
Delivery between Thu – Tue $9.90
Shimano Bb-Un300 Square Taper Bottom Bracket 73x122mm W/Fixing Bolt in Silver
Delivery $12.50
Bottom Bracket Shimano BB-UN300 68x110
Delivery between 10–14 Nov $12
Shimano UN300 Square Taper Bottom Bracket 68 x 122.5mm
Delivery between 10–12 Nov $9.90
Shimano BB-UN300 Bottom Bracket without Fixing Bolts | bikeNOW in South Melbourne 68x118mm
Delivery $10
Shimano Euro BB Square Taper (115mm)
Delivery between Wed – Mon $10
Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle [MPN: EBBUN300B22X]
Shimano Bb-un300 Square Taper Jis 68x113mm Spindles Bsa (english)
Delivery $38.99
Bottom Bracket Bb-un300-e Pin Quadro Jis 125.5mm Bsa 68mm
Delivery $88.55
Shimano UN300 BSA 68 Bottom Bracket
Delivery between Thu – Fri $15.08
Shimano Bb-UN300 Taper Mtb Bottom Bracket British Thread 68mm / 113mm 68mm Bottom Brackets
Free delivery
SHIMANO Square Type Bicycle Bottom Bracket - BSA 68MM, Spindle: 127.5MM (D-EL) - EBBUN300B27B
Delivery between 21–30 Oct $30.26
SHIMANO Bottom Bracket BB-UN300 Square Type
Delivery between 16–21 Oct $32.40
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 113mm |
Shimano BB-UN300 Vierkant-Innenlager // BSA 73x123 mm (Alivio)
Shimano Square Type Bottom Bracket 68 x 122.5mm w-o Bolts - BB - UN300
Delivery between 8–18 Nov $12.94
Shimano BB-UN300 Standard Bottom Bracket in Grey
Delivery $15
SHIMANO,68-122.5 mm E-Type,EBBUN300EB23X BB-UN300 Bottom Bracket British Thread, 68-122.5 mm (LL123) - for E-Type FD
Shimano BB-UN300 BSA square bottom bracket Version 68 x 122.5 mm
Delivery between Fri – Mon $42.63
See 84 historical offers
Shimano BB-UN300 68x123mm Bottom Bracket
Delivery between Thu – Tue $9.90
BB-UN300 Bottom bracket 68x110mm w/o fixing bolts
Delivery $16.95
Shimano UN300 English Bottom Bracket 73 x 113mm
Delivery between 11–19 Nov $10
Shimano BB-UN300 73x118mm XL Bottom Bracket w/o Fixing Bolts
30-day returns
SHIMANO BB-UN300 Bottom Bracket - English, 68 X 110mm Spindle, Square Taper JIS
Delivery $30.26
Shimano Unisex's BBUN300C23 Wheels, Silver, 73-122 mm
Free delivery between 11–14 Nov
Shimano BB-UN300 BOTTOM BRACKET 73x113mm
Delivery $20
Shimano Tourney Bb-un300 Mtb Bike Square Type Bottom Bracket 68mm Un26
Delivery $6.63
Shimano Bb-un300 Bottom Bracket - English, 73 X 118mm Spindle, Square
Delivery $39.00
Shimano Bb-un300 Bottom Bracket — Square Taper / Bsa / 68 X 118mm
Free delivery
Shimano Bb-un300 Bottom Bracket - English, 73 X 118mm Spindle, Square
Delivery $38.90
Shimano Un300 Bottom Bracket Bike Cycle Bicycle Bb Square Taper Sealed
Free delivery
Shimano UN300 Square Taper Bottom Bracket
Delivery $14
Shimano BB-UN300 British Thread Bottom Bracket
Delivery between 11–14 Nov $30.56
Shimano Bb-un300 Square Taper Bottom Bracket - 107 To 127mm - 68/73mm
Free delivery
BB-UN300 BOTTOM BRACKET 73x122mm W/FIXING BOLT
Shimano BB-UN300 Square Taper Bottom Bracket 68x118mm
Free delivery
Shimano Shimano BB-UN300 Bottom Bracket 73x122mm w/Fixing Bolt
Delivery $19.99
Shimano Bottom Bracket Un300 68 X 118mm Square Taper Bb British Thread
Free delivery
SHIMANO unisex - adult 68/122.5mm bottom bracket, black, one size
Free delivery
Shimano BB-UN300 Bottom Bracket 73x113mm LL w/o Fixing Bolts
Delivery $15
Shimano Bottom Bracket BB-UN300 68 x 118mm
Delivery $14.95
Shimano UN300 Square Taper Bottom Bracket
Shimano Bb-un300 Bottom Bracket - English, 68 X 113mm Spindle, Square
Delivery $32.57
Shimano BB-UN300 Standard Bottom Bracket
Free delivery between 7–13 Nov
Shimano BB-UN300 Bottom Bracket 68 x 118 mm / Without fixing bolt
Delivery $19.95
BB-UN300 BOTTOM BRACKET 68X118MM W/O FIXING BOLTS
Shimano BB-UN300 Bottom Bracket 68 x 127.5mm with Fixing Bolts
Shimano BSA 127.5/68mm BB-UN300 Square Chaincase Bottom Bracket
Delivery $70.99
Shimano Bottom Bracket UN300 73 x 113 LL w/o Fixing Bolts
Shimano Shimano BB-UN300 BOTTOM BRACKET
Delivery $9.99
Shimano BB-UN300 BOTTOM BRACKET 73x118mm LL w/o FIXING BOLTS
Delivery $9.95
Shimano MTB DOUBLE BOTTOM BRACKET, BB-UN300 - 73mm
Delivery between 12–15 Nov $19.99
Shimano Bb-un300 Bottom Bracket 68x127.5mm W/ Fixing Bolts
Delivery $9.90
Shimano UN300 Bottom Bracket 68x122.5 | Grey
Delivery between 10–18 Nov $9.50
Shimano BB-UN300 BOTTOM BRACKET 68x122.5mm w/o BOLTS FC-TY701
Bottom Bracket Shimano BB-UN300 68x127.5mm (Crank bolts NOT included)
Delivery $15.64
Shimano BB-UN300 Bottom Bracket
Shimano Bb-un300 Bottom Bracket 73x122mm W/fixing Bolt | Melbourne Powered
Free delivery between 6–17 Nov
SHIMANO BB-UN300 BOTTOM BRACKET 68X122.5MM W/OBOLTS FC-TY701
Delivery between 7–15 Nov $15
Shimano BB-UN300 Square type 122.5mm Bottom Bracket
Delivery $12.95
Shimano BB-UN300 Bottom Bracket 68 x 113mm
Delivery between 5–17 Nov $12.95
Shimano BB-UN300 BOTTOM BRACKET 68x123mm W/O FIXING BOLTS
Shimano Shimano UN300-K 68 x 117.5mm Bottom Bracket
Delivery between 11–17 Nov $15
Shimano Bb-Un300 Bottom Bracket - 68X122.5MM - SUPER SALE
Delivery between 10–18 Nov $9.95
Shimano BB-UN300 Bottom Bracket 68x110mm w/o Fixing Bolts (Square Taper)
Delivery between 10–18 Nov $12
Shimano Bottom Bracket Square taper BB-UN300 (w/o fixing bolts) - 68x115mm
Shimano BB-UN300 Square Taper Bottom Bracket 73mm / 113mm
Delivery between 10–14 Nov $12.90
Shimano Shimano, Cartridge Bottom Bracket Set BB-UN300-K, Spindle: Square-type , Shell: BSA 68mm, Spindle: 110mm, w/o Fixing Bolt
Delivery $69.45
Shimano Bb-un300 73x118
Shimano Bb-Un300 Bottom Bracket - 68X122.5MM - SUPER SALE
Delivery between 10–12 Nov $9.95
Shimano BB-UN300 Bottom Bracket — Square Taper / BSA / 68 x 118mm
Delivery between 10–18 Nov $8
Miniklio velenas Shimano BB-UN300 BSA 68mm 113 mm
Shimano BB-UN300 Road Bike Bottom Bracket 68x113mm w/o fixing bolts
Delivery between Thu – Mon $10
Bottom Bracket Shimano BB-UN300 Square Taper 68mm 123mm
30-day returns
Shimano Shimano, BB-UN300 Bottom Bracket 68x115mm w Bolts
Shimano BB-UN300 Bottom Bracket 73x113mm LL w/o Fixing Bolts
Delivery between Thu – Tue $9.90
Shimano Bb-Un300 Square Taper Bottom Bracket 73x122mm W/Fixing Bolt in Silver
Delivery $12.50
Bottom Bracket Shimano BB-UN300 68x110
Delivery between 10–14 Nov $12
Shimano UN300 Square Taper Bottom Bracket 68 x 122.5mm
Delivery between 10–12 Nov $9.90
Shimano BB-UN300 Bottom Bracket without Fixing Bolts | bikeNOW in South Melbourne 68x118mm
Delivery $10
Shimano Euro BB Square Taper (115mm)
Delivery between Wed – Mon $10
Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle [MPN: EBBUN300B22X]
Shimano Bb-un300 Square Taper Jis 68x113mm Spindles Bsa (english)
Delivery $38.99
Shimano Bb-un300 Square Taper Bottom Bracket
Delivery $15
Bottom Bracket Bb-un300-e Pin Quadro Jis 125.5mm Bsa 68mm
Delivery $88.55
Shimano UN300 Square Taper Bottom Bracket
Delivery $15
Shimano UN300 Square Taper Bottom Bracket
Delivery $15
Bottom Bracket Shimano BB-UN300 BSA 68mm 117.5mm/68mm
Delivery $30.22
Shimano UN300 BSA 68 Bottom Bracket
Delivery between Thu – Fri $15.08
Shimano Bb-UN300 Taper Mtb Bottom Bracket British Thread 68mm / 113mm 68mm Bottom Brackets
Free delivery
Square bottom bracket Shimano BB-UN300 68mm / 110mm
Delivery $53.71
SHIMANO Square Type Bicycle Bottom Bracket - BSA 68MM, Spindle: 127.5MM (D-EL) - EBBUN300B27B
Delivery between 21–30 Oct $30.26
Mov.Pedal.Ro Bsa 68-115MM
Delivery $10.92
SHIMANO Bottom Bracket BB-UN300 Square Type
Delivery between 16–21 Oct $32.40
OS POGONA SHIMANO BB UN300 BSA 68mm 127,5
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 113mm |
