Savox Coreless Digital High Torque Servo for Aircraft Monster Truck Crawlers 675 All of the variations have

All of the variations have one magnetic coupler

for SB2271SG

the Bullpup is one speedy guy

and it was only produced with wide feet so these bumpers will not fit between the ties of "Super-O" track

Savox Coreless Digital High Torque Servo for Aircraft Monster Truck Crawlers 675 All of the variations haveSavox Coreless Digital Servo 0. 14sec 444. 4oz @ 6V SA1231SGP The Savox SA 1231SG+ High Torque Steel Gear digital servo is the servo that is ideal for those requiring extra torque, but not using high voltage as a power source. Features: Extremely strong unique steel gears ensure long life and durability. Minimized backlash designed for aircraft use, but great for Monster Truck and crawling use. Aluminum middle case to help with cooler operating