Rc 4wd brand rc4wd r4 ultimate scale single speed transmission. Features: fits the rc4wd trail finder ii rtr & kitcnc machined billet aluminum constructionhardened steel gearsfastens to the z-s1043 v8 engine replica (not included)you will receive: r4 transmission14t 48p pinion gear36t / 20t 48p gearten m2. 5 x 5mm socket head cap screws5x11x4mm ball bearingspecifications: body width: 1. 99 (50. 6mm) body length: 3. 07 (78mm) body height: 2. 36 (60mm) output shaft length: 0. 33 (8. 5mm) output shaft od: 0. 19 (5mm) gear ratio: 10. 1: 1 weight: 5. 86oz (166g)commentswill not fit on the trail finder ii with the 4 link kit or3 link kit installed. Jxs 04/03/15ir/jxsname=