SpeedTek RC 9,000uf 10V 4x4+1 capacitor pack can handle a maximum of 2s. It is proven to perform! We use these caps on all of or drag racing & speed run vehicles. They are also less than 1 1/2" square and use high flex/temp wire. 
 
***Designed specification for 1/10 Scale No-Prep 2wd Drag Vehicles***
 
The packs comes with an overall wire length of 4" and the option of terminating without a connector or a male/female XT90, EC5, XT60, Deans, Tamiya, EC3, or Traxxas connector.