Specialized RC (Corally USA) will be releasing a LIPO adapter tray for the RDX-Phi to accept batteries larger than 4000mah. Pictured with the SMC 5000mah LIPO and has room to spare. We have easily put the SMC 5000, Checkpoint 5400, Orion 4800 and CORE 5000 in the tray.
The tray also has cutouts to accept the Corally bolt on weights as well to assist with balancing. The production versions will be anodized black. It will be sold as a tray only, weights and battery strap not included. You also have the ability to tape the battery into the tray and eliminate the strap all together.
Estimated street price will be $40.