Name: GForce GF4A DogBox 4 Speed Transmission
Brand: G-Force
Price: 7800.0 USD
Availability: InStock

The G-Force GF4A stands as one of the most robust and refined 4-speed racing transmissions available, offering many of the structural advantages found in the G101A while adding key features that enhance reliability under extreme racing conditions. Like the G101A, the GF4A uses a dual-bearing center support and an integrated mid-plate, both of which contribute to exceptional case rigidity and gear stability at high power levels. Where the two differ sharply is in lubrication: the GF4A incorporates its own internal oil pump—an important advantage that the G101A does not share—providing consistent internal oiling during demanding, sustained runs. While the G101A distinguishes itself with an internal shifting mechanism, the GF4A focuses on delivering the same top-tier strength with the added security of active lubrication, making it a highly dependable choice for racers who demand both durability and controlled oil management from a 4-speed transmission.

Please Read

G Force GF4A dog box have an output shaft that is *32 spline to handle maximum power transfer, GF4A Dogbox transmission require a Hardened slip yoke for the front of your drive-shaft you are running. You can also purchase this "Hardened Slip Yoke" direct from us.

G101A Shifter Setback Options:

(THIS IS MEASURED FROM FACE OF TRANSMISSION BACK TO CENTER OF SHIFTER ASSEMBLY)

G Force offers you ANY shifter setback you desire
H Pattern Only 19.5" , 21.5" 23.5'' or 25.5" inches
V Gate Only 20.25'' , 22.25'', 24.25, 26'', 27'''

G Force GF4A CUSTOM Input Shafts:

(THESE ARE ADDITIONAL $495)

10 spline x 1.125 diameter 6.660" length Email us after placing order
10 spline x 1.375 diameter x 6.660" length DRAG RACING Email us after placing order
14 spline 2JZ x 1.125" diameter x length (LONG input *Used with Toyota V160 style Bell Housing*) Email us after placing order
18 Spline
24 spline RB/SR Email us after placing order
26 spline RX7 series
29 Spline