Suitable for M690LMust with M480 Main Battery Plate M480006AXT
Brand new lower main frame upgrade for M690L with retract moving 45mm forward to prevent against body dip to the front.
Enlarge the retract width to 71mm while the original width is 56mm only. It allow a bigger capacity battery to be used for M690L, such as 6S 22.2 16000mAh.
The newly essential M690 auxiliary battery plate with solid hook allow a steady fix for large battery.
M690L with new upgrade main frame can also perfectly fit in M690 carry box.

* M480 Lower Carbon Plate x 1
* M690 Auxiliary Battery Plate x 1
* M470 Frame Mounting Bolt x 4(M2.5x28mm)
* Socket Screw - Nylok x 14(M2.5x6mm)
* Socket Screw - Nylok x 8(M2.5x10mm)
* Socket Collar Screw - Nylok x 2(M3x8mm)
* Flat Head Socket Cap Screw - Nylok x 4 (M2.5x6mm)
* Washer x 8(2.5x7x1mm)