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ROTOR UBB 4630 Bottom Bracket
March 7, 2025$115.00
Works with PF30, BBRight or 386 EVO bottom brackets
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ROTOR UBB 4630 Bottom Bracket
The ROTOR UBB 4630 Bottom Bracket adapts any PF30, BBRight or 386 EVO bottom bracket shell to fit a 30 mm diameter crank spindle. However, what is unique about ROTOR’s UBB, is that it features external bearings and uses a threaded sleeve to lock the bottom bracket cups in place. This offers several advantages over a more traditional press fit bottom bracket. The ROTOR UBB helps provide a uniform, smooth spin to the crankset, it helps eliminate any unwanted noises and creaks; it works to improve bearing life; and the external location of the bearing results in increased shell stiffness.
ROTOR Bottom Bracket Comparison
| Model | Bearings | Price | Shell | Cranksets | Weight |
| ROTOR BSA 30MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits BSA (English) threaded 68/73 mm shells | Fits 30 mm cranksets | Steel: 96 grams | Ceramic: 89 grams |
| ROTOR ITA 30 Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits ITA Threaded 70 mm frames | Fits 30 mm cranksets | Steel: 54 grams | Ceramic: 49 grams |
| ROTOR BB1 BSA 24MM Road Bottom Bracket | Steel | Ceramic | Steel: $50 | Ceramic: $135 | Fits BSA (English) threaded 68 mm shells | Fits 24 mm cranksets | Steel: 93 grams | Ceramic: 91 grams |
| ROTOR BB1 ITA 24MM Road Bottom Bracket | Steel | $50 | Fits ITA Threaded 70 mm frames | Fits 24 mm cranksets | 91 grams |
| ROTOR T47 30MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits T47 68 and 73 mm shells | Fits 30 mm cranksets | Steel: 103 grams | Ceramic: 97 grams |
| ROTOR T47 24MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits T47 68 and 73 mm shells | Fits 24 mm cranksets | Steel: 120 grams | Ceramic: 113.5 grams |
| ROTOR UBB 4630 Bottom Bracket | Steel | $115 | Available for PF30, BBRight and 386 EVO frames | Fits 30 mm cranksets | 106 grams | 109 grams | 109 grams |
| ROTOR Press Fit 4130 Bottom Bracket | Steel | Ceramic | Steel: $50 | Ceramic: $200 | Fits PressFit 86/89/92 mm shells | Fits 30 mm cranksets | Steel: 54 grams | Ceramic: 49 grams |
| ROTOR Press Fit 4630 Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $175 | Fits PF30, BBRight or 386 EVO shells | Fits 30 mm cranksets | Steel: 106 grams | Ceramic: 100 grams |
| ROTOR Track BSA Threaded Bottom Bracket | Steel | $105 | Fits BSA (English) threaded 68 mm shells | Available for 24 mm and 30 mm cranksets | 108 grams | 119 grams |
Compatibility
Works with PF30, BBRight or 386 EVO bottom brackets.
Specs
- Shell Width: 68/79/83/86.5 mm
- Type: PF30/BBright/386EVO Threaded
- Axle Size: 30 mm
- Weights: PF30 - 106 grams | BBRight - 109 grams | 386 EVO - 109 grams
- Built using 7000 series aluminum alloy
OTHER CUSTOMERS ALSO VIEWED
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ROTOR 30 MM Spacer Kit$20.0012-piece spacer kit for 30 mm spindles -
ROTOR Press Fit 4630 Bottom Bracket$65.00 – $175.00Works with PF30, BBRight or 386 EVO bottom brackets -
ROTOR Press Fit 4130 Bottom Bracket$50.00 – $200.00Compatible with BB86, BB89 and BB92 bottom brackets -
CeramicSpeed PF4130 Road and MTB Bottom Bracket$379.00 – $479.00Made for 41 mm x 86.5 mm bottom brackets and 30 mm cranks
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