ATV Connection Magazine

Speedwerx Prowler test results !!!!!

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Posted by: Speedwerx

Testing has been going very very well. A few months ago we made some posts with some H1/ prowler motor dyno #'s. Here are some in the feild test results for you to look at.


The comparisons are made between a comepletly stock unit and our perfromance addition with the following parts:

- Speedwerx cam kit $ 333.00
- Speedwerx Head port w/ valve job (stock size valves ) $ 250.00 +
- Speedwerx Full ex. system $ 375.00-425.00
- Speedwerx High flow intake $ 175.00-200.00
- Speedwerx Clutch kit for stock tires $ 125.00-155.00
- Speedwerx Hi rev cdi $ 362.95

Speed kits / package deals are avaialble as well.


These results are in a 500' run

Stock Spx upgrades listed above
2 sec. 16.19 mph 21.15 mph
4 sec. 25.89 mph 30.78 mph
6 sec. 31.88 mph 36.95 mph
8 sec. 35.67 mph 40.72 mph
10 sec. 38.08 mph 43.44 mph
12 sec 40.07 mph n/a


We also have some top speed info as well.

Bone stock machine went 48.90 mph in about 1500'

Speedwerx machine with mods above went 53.50 mph in the same distance.

We have a few more products for the prowlers in the works as well.

Coming soon:
-Flat slide carb kit
-Higher compression piston kits
-Newer cam shaft specs for better throttle response and faster engine reving.


If any one has any ?'s in regards to any of these products please let us know.