Square Taper Bottom Brackets

Erickson Titanium Bottom Bracket: 113mm x 68mm Square Taper - Vintage 1990's - RARE (Near Mint+ LOW MILES)

This is one of the ultimate square taper bottom brackets to come out of the 1990's CNC anodized aerospace era! It weighs a scant 156 grams, and sold for the insane price of $200 from roughly 1995-1998 ($425 in 2025 money!).  It uses a spindle...

NIB/NOS Zeus Criterium / Supercronos Bottom Bracket: FRENCH - 109mm - Chrome Crank Bolts

French threaded, Spanish made BB from the 1960's, 1970's, and early 1980's. Comes with gorgeous chromed "Zeus Made in Spain" crank bolts.  Similiar design to the 2000, but steel instead of the 2000's titanium! Condition New old stock in retail box...

Shimano XT BB-UN71 Square Taper Bottom Bracket: 114mm x 70mm (Near Mint, Perfect Bearings)

Like running square taper cranks, but tired of the bottom bracket weight?  This XT/Ultegra BB is nearly 100g lighter than the standard UN-52.  Sealed bearings, hollow spindle, buttery smooth. Condition Near mint very lightly used shape...

NIB/NOS Shimano XTR M900 BB-UN71 Square Taper Bottom Bracket: 107mm x 68mm

High end XTR bb-m900 gruppo bottom bracket. 107mm was the stock length for the XTR FC-M900 to get a 47.5mm chainline Condition New in retail box, pristine.  Details 107x68mm English threads JIS square taper

NIB/NOS Campagnolo Nuovo Record #1046/A Bottom Bracket: 114.5mm X 68mm English (Take off)

BB for 1977-1987 Nuovo Record Strada crankset, at 114.5mm long English threads.  Rifled thick cups.  The spindle is a world logo.   Condition New old stock, take off.  It was installed on a show bike, and then removed before...

NOS Specialized Flag Bottom Bracket Spindle: 124.5mm x 73mm - Triple - Square Taper - 1980's - 1990's

This BB spindle is a mid 1980's version to work with the Specialized Flag crank among others. Works with most cup and cone bottom bracket cups. Condition New old stock, no box. Some shop wear Details 124.5mm x 73mm JIS square taper Markings: K-8

NIB/NOS Specialized Bottom Bracket Spindle: 122.5mm x 73mm - MTB Triple - Square Taper - 1980's - 1990's - Bolts

This BB spindle is a late 1980's to early 1990's version. It is a 122.5mm length, for many triple mountain bike cranks such as Shimano XT M730/M735/M739 / Deore / LX / DX, Specialized Pro, etc. Works with most cup and cone bottom bracket cups...

Prototype Sampson Stratics Titanium Bottom Bracket: Square Taper - 122.5mm (Near Mint+)

Sampson made some fine bottom brackets in the 1990's.  This is a prototype of the Stratics model circa late 1980's or very early 1990's.  It has a standard spindle type, the switch to the wildly shaped spindle center had not occurred yet...