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ZRX-1200 Power Accessories
Stage One
Stage 1 of the program simply consists of a Muzzy exhaust and a jet kit. The measured rear wheel horsepower of the stock ZRX is 120 @ 8100 rpm and the addition of the exhaust and jet kit bumps that to 136.6 @ 8250. This is a 14% increase in power.  
Item Muzzy P/N
Price
Muzzy Exhaust (stainless/aluminum) 141202-01
$739.95
Jet Kit (includes air filter) F9225
$230.95

Dyno Chart (opens in new window)
 
Total Price (Stage One):
$969.90
Additional HP:
16.6hp
Cost per added HP
$58.32
   

Stage Two
The 1224 cc Stage 2 is definitely the way to go. This consists of the pipe and jet kit, the "drop-in" cams, and a 2mm overbore kit with higher, 12.5:1 compression. The added compression and 61cc's of displacement provided by this step adds back the mid range power missing with just the Stage 2 cams and moves the top end power to an exciting 165 hp @ 9800 rpm, a whopping 45 hp, a 37% increase over stock. Even better news though, is the 100 hp you get at 5850!
Item Muzzy P/N
Price
Muzzy Exhaust (stainless/aluminum) 141202-01
$739.95
Jet Kit (includes air filter) 0012-00010
$230.95
Muzzy Cams 0003-00003
$930.95
1224cc Kit 0007-00006
$1195.95
(plus core charge)

Dyno Chart (opens in new window)
 
Total Price (Stage Two):
$3097.8
Additional HP:
45hp
Cost per added HP
$68.84
   

 

 


Muzzy Cams Only
The use of just the drop in cams without the bore kit is a special purpose step. The cams yield a further 12% increase in top end power (up to 153) but do not perform satisfactorily at the 5000 to 6500 rpm range. Any added cam without any added compression does not provide and optimum mid-range. We say special purpose because, although the cams do not cause a power drop that is below the STOCK power curve, the slope of increase at this area may not be suitable for street use. These would provide a peaky drag race only power curve where high rpm breathing is the only consideration. Again, this setup is available but not recommended.  
Item Muzzy P/N
Price
Muzzy Cams 0003-00003
$930.95
   
 
Price
$930.95
   

 

 

For more info or to order call: 1-541-385-0706

 

 

 
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