Our Classic bottom bracket uses our heat-treated stainless steel spindle. This bottom bracket is intended for applications demanding maximum durability and minimum flex. It is offered with our Standard PWX03 bearing. The bottom bracket is offered with a 63/68, 68/73 and 100 mm aluminum shell. For those looking for a low drag bearing option we offer our PWN93 Carbonyte bearing upgrade.
Our Pro bottom bracket uses our proprietary titanium spindle. This bottom bracket is intended for applications demanding light weight, minimum flex, and maximum durability. It is offered standard with our PWN93 low drag Carbonyte bearing.
Our Pro bottom bracket uses our proprietary titanium spindle. This bottom bracket is intended for applications demanding light weight, minimum flex, and maximum durability. It is offered standard with our PWN93 low drag Carbonyte bearing.
| SPECIFICATIONS | |
|---|---|
| Shell material | 6061 Aluminum |
| Spindle material | Stainless steel (heat-treated) (Classic), Titanium (Pro) |
| Bearing availability | 6903 (Standard), 6903 (Carbonyte) |
| Classic bottom bracket weights | 102 mm (196 grams), 105 mm (199 grams), 108 mm (208 grams), 110.5 mm (209 grams), 115 mm (221 grams), 120 mm (228 grams) |
|
Pro bottom bracket weights |
108 mm (138 grams), 110.5 mm (140 grams) |
| Rider and bike weight limit | 280 lbs / 127 kgs (Classic), 190 lbs / 86 kgs (Pro) |
| Materials | All of our manufactured items are machined out of US-produced materials. |
Please note: Bottom brackets with a length of 110.5 - 120 mm can be offset. If you need your bottom bracket spindle to be offset please include this information in the notes section when checking out, thank you.
INSTRUCTIONS
Square Taper Bottom Bracket Installation (pdf)
T47 Square Taper Bottom Bracket Installation (pdf)