BOB also sells these two together as the Revolution Flex 3.0 Travel System with B-Safe Gen2.
This answer is for the BOB Revolution Flex 3.0.
Key specs
Adapter
about $79.99
Weight with carrier
39.4 lb
Seat rated to
35 lb, 32 in
Stroller folded
38 x 25 x 16 in (L x W x H, wheels on)
Good to know before you click it on
Never jog with an infant car seat attached; the store page lists 'From Birth with Infant Car Seat (walk only)'.
About this pair
The Britax B-Safe Gen2 goes on the BOB Revolution Flex 3.0 with the BOB Jogging stroller adapter for older Britax seats (model S12045300), about $79.99. With the carrier on, you are pushing about 39.4 lb (28.5 lb stroller, 10.9 lb carrier). The seat itself is rated up to 35 lb and up to 32 in, per Britax.
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14 other infant seats fit the BOB Revolution Flex 3.0.
Summary from the makers' published data.
How to set up the Britax B-Safe Gen2 on the BOB Revolution Flex 3.0
What you need
The BOB Revolution Flex 3.0
The Britax B-Safe Gen2 carrier (its car base stays in the car)
The BOB Jogging stroller adapter for older Britax seats (model S12045300)
Step by step
1Set the parking brake and rotate the canopy toward the handlebar.
2If the stroller has no built-in receivers, push the included R and L receivers onto the yellow pins behind the seat fabric until they click and green bars show.
3Push both end caps of the adapter straight into the receiver sockets until each side clicks, then pull the front tube to check it is locked.
4Recline the stroller seat and set the car seat on the adapter rear-facing and centered, lining up the car seat's attachment points with the Click & Go receivers.
5Push the car seat straight down until both sides click.
6Lift up on each side of the car seat to check it is secure.
