The vast majority of folding bikes (Brompton, Birdy, Dahon…) and other urban bikes have frames compatible with BSA bottom brackets shell. Ridea offers three different models all compatible with the BSA standard and cranksets with spindles of 24 mm of diameter.
LS BSAF 24 is a special design for Birdy bikes using double chainring cranksets. This BB provides a wider spacing to acommodate the longer spindles required by 2x cranksets on Birdy bikes. Birdy bikes with one chainring crankset use any of the other three bottom brackets models shown in the table. LS BSAF 24 is not compatible with Brompton bikes.
| P/N | Cup material | Bearings | Color | Weight |
| CN BSA 24 | Forged Carbon | CS or C | Black | 68 g |
| LS BSA 24 | AL7075 | CS or C | black, red, gold or silver | 87 g |
| RS BSA 24 | AL6066 | S | black, red, gold or silver | 98 g |
| LS BSAF24 | AL7075 | CS or C | black, red, gold or silver | 100 g |
*Bearings legend: CS (Ceramic balls with stainless steel races and 4 years of warranty); C (Ceramic balls with steel races and 1 year of warranty); S (steel balls and races and 1 year of warranty).
FORGED CARBON
First introduced in our OSPW series, Forged Carbon has a combination of properties that makes it the best material for many cycling applications. The BB cups of all our 6CBB bottom brackets are only possible thanks to the development of this material by Ridea. Forged Carbon reduces the vibrations and it keeps its properties under very different weather conditions while keeping a low weight and high precision manufacturing measurements, making it the ideal material for bottom brackets.
NYLON SPINDLE SLEEVES
Forged Carbon is not the only exclusive material on Ridea 6CBB. Nylon bearing spindle sleeves increase performance and ease installation. Nylon is flexible for better adaptability to the spindle and it is not affected under extreme weather conditions.