3mm stock shaft of the 1/18 Arrma Grom trucks

The PowerHobby 2S 4800mAh 7

and an overall Gear Ratio of 81

Although the product page mentions compatibility with 2S HV LiPo systems up to 8

Traxxas 10968-BLUE Blue Aluminum XL GT-Maxx Rear Shock Bodies (2) f8e-truggy 3mm stock shaft of theTraxxas 10968 BLUE Blue Aluminum XL GT Maxx Rear Shock Bodies (2) Upgrade your rear shocks with this genuine Traxxas set of two aluminum XL GT Maxx shock bodies in blue. Aluminum construction resists wear and dent better than stock plastic shock bodies for a more durable, better looking suspension setup. Genuine Traxxas option part XL GT Maxx rear shock bodies, set of 2 Aluminum construction, blue finish Direct fit installation