All Shells are for BSA (English) thread 68mm Width unless otherwise indicated.

Pressed BB Shells

- 28.6x28.6x22.2mm
731 - 31.7x28.6x22.2mm. 61/63
731 has half moon scoop cuts into ports

THRON - 31.7x28.6x29.5/18mm
60/64. Supplied with Chain Stays
Columbus CRM214OV

832 - 22.2mm Round
Chain Stay Ports Only

573 - 31.7x28.6x22.2mm.
Pressed ATB shell. Italian.



Machined BB Sleeves

BB2005 - Steel Bottom Bracket Shell, BB30 x 1.875'' OD x 68 mm Wide

Best Quality Cromoly Sleeve:
No Holes
597N 38.1x68.5mm English Thread
597N-73 38.1x73.5mm English Thread
. 39x68.5mm English Thread
597-73 39x73.5mm English Thread
39x83mm English Thread
596 No Holes. Italian thread 70mm
With Holes. English Thread
597H Inc 28.6 Seat Hole 39x68mm
597H-318 31.8 Seat Hole 39x68
With 4 Vent Holes. 39x68mm

594 No holes 40x68.5mm Eng.Thr.
594-73  No Holes 40x73.5mm Eng.Thr.
 XCRBB 38.1mm.x68.5 17/4 Stainless. No holes. Englsih Thread
597-100 100mm Wide. 39mm 4130 steel. No Holes. English Thread


PF30. Sleeve for 69mm width
PF30-73. As Above for 74mm width

4130 Cromoly Steel

BB1019 BB30 Sleeve Stainless Steel 69mm






B.Sleeve. Front Sleeve for Bushnell
Eccentric 66mm Width 53.95mm ID

Front Sleeve for S.Eccentric Eccentric. 68mm Width. 55.1mm ID. Requires Builder to Split Sleeve and braze on clamping binder bosses
(eg Art 2280)






Bottom Bracket Eccentrics

Bushnell Eccentric. Classic
 Fits B.Sleeve above
Full 1/2" Throw

     T.Eccentric Aluminium Eccentric
55mm x 68mm
S.Eccentric Aluminium Eccentric 55mm OD. 1/2" Plus Throw