Firefighting Wiki
Impel logo
Velocity logo

The Pierce Impel and Pierce Velocity are custom fire apparatus chassis built by Pierce Manufacturing, and were introduced in 2006.


The Impel and Velocity are designed with identical structures and share many of the same features but the Impel is built as a medium-duty chassis, whereas the Velocity is built as a heavy-duty chassis. The early models of the Velocity & Impel were known for their large, protruding front mirrors (nicknamed 'bus mirrors', due to their resemblance to some school buses). Eventually, Pierce also began offering more conventional-style mirrors.

In the early 2010s, Pierce redesigned the raised roof of the Impel and Velocity with a new "forward roof" design. This allowed for additional headroom inside the cab.

Product Specifications[]

Impel Velocity
Engines Cummins L9 Cummins L9, Cummins X12,
Cummins X15, Detroit DD13
370-450 370-600
Transmission Allison Transmissions (3000 EVS) Allison Transmissions
(3000 EVS, 4000 EVS, 4500 EVS)
Alternator 270-430 Amp
Gross Axle
Weight Rating (GAWR)
23,000 lbs. front
54,000 lbs. rear
24,000 lbs. front
60,000 lbs. rear
Frame Rails 13⅜"
Cab Width 100"
Cab Length
60", 70", 84" 15"[2], 60", 70", 84", 104" split tilt
Cab Door
2-door, 4-door, 3-door "Command Cab"
Cab Roof
Flat or Forwarded Roof (10" / 20" / 24" as custom order / notched 10" for aerials / deep notch w/ 10" for aerials)
Cab Door
Barrier or Full Height
Up to 10



  1. Cab Length is the measurement from the front-wheel centerline to the back of the cab.
  2. The VX1500 has a length of 14.65 inches. It is most often used for command and walk-around rescue applications.