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SC-1 AND ST-1 BOTTOM BRACKETS
SC-1 bottom brackets are the perfect choice for those who still
prefer the low weight and simplicity of square taper cranks. Each
bottom bracket is hand assembled using a hollow chromoly spindle,
precision sealed bearings, forged and CNC-machined alloy cups and
a composite center spacer/seal.
The ST-1 is Promax’s lowest price bottom bracket. Each bottom
bracket is hand assembled using a steel spindle, sealed bearings,
forged and CNC-machined alloy cups and a composite center
spacer/seal
Description Length Type WPS# List
PROMAX SC-1 BOTTOM BRACKETS
SC-1 Cro-mo BB 108mm Square
91-9147 $39.95
SC-1 Cro-mo BB 113mm Square
91-9148 39.95
PROMAX ST-1 BOTTOM BRACKETS
ST-1 Steel BB
113mm Square
91-9143 $24.95
Black
Polished White
Red
Blue
Gold
List
91-9008K 91-9008S 91-9008W 91-9008R 91-9008B 91-9008G
$69.95
• Standard 24mm outboard for Euro threaded BB
• Direct bearing to spindle surface contact – No more plastic sleeve
to crack
• O-ring design to keep noise to a minimum
• Anodized to match all other Tangent Products
• 3 spacers added to dial in chain alignment
• Premium Bearings
TANGENT OUTBOARD BB
Description Spec.
Type WPS# List
Cro-Mo
108mm square
91-9150
$39.95
Cro-Mo
113mm square
91-9152
39.95
Cro-Mo
118mm square
91-9154
39.95
Titanium 108mm square
91-9160
129.95
Titanium 113mm square
91-9161
129.95
Titanium 118mm square
91-9162
129.95
TANGENT TITANIUM
• Carbon Body
• Alloy Cups
• Premium Bearings
• 195 grams
TANGENT CRO-MO
• Hollow Cro-Mo Spindle
• Alloy Body
• Alloy Cups
• Premium Bearings
TANGENT TAPERED BB
BOTTOM BRACKETS
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