Pro Slot PS-121 "The Boss 490" Drag Racing Motor Replacement Armature

The “BOSS 490” was designed for the bracket racer running a heavy weight, hard body car weighing 125g+. It was designed to use 10T pinions for better gear mesh and better short times and yet still use very little glue to launch. The motor with this armature has more torque and top end than the PS-101 and is perfect for heavy hard bodies. Tests in a 125g MM/PS with 10/60 gears and 1.060" x 0.500" tires yielded ET’s in the 0.880 Seconds @ 65+ mph in the ¼ mile. The dyno results say it all.

For more in depth look at “THE BOSS 490” check out Martin Nissen’s website http://www.kahale-martinapmachine.net Marty has done extensive testing with “THE BOSS 490” and has posted some impressive tuning tips.