This ramp includes both flaps, pre-installed.
Data East Teenage Mutant Ninja Turtles Ramp 500-5337-00
Data East Checkpoint Main Ramp 545-5173-00
Data East Back To The Future Ramp 515-5321-00-09
Data East Hook Skill Shot Ramp 545-5262-00
Data East Hook Whirlpool Ramp 545-5243-00