This part is from Realism Overhaul
cost:
20000
mass:
86.21
category:
Engine
TechRequired:
veryHeavyRocketry
engine_data:
standard
{"isp"=>{"vac"=>268.5, "atmo"=>243.0}, "propellant_ratios"=>{"PBAN"=>1.0}, "max_thrust"=>14780.0}
SC-MSRM
{"isp"=>{"vac"=>268.5, "atmo"=>243.0}, "propellant_ratios"=>{}, "max_thrust"=>14780.0}