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Old 04-18-2004, 05:53 PM   #1
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Default What is the difference between these two .21 on road engines???

What is the difference between these two .21 on road engines???
.Rear Exhaust .21 PT-21 R Race On-Road
.RX 21 R1 on road
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Old 04-19-2004, 09:13 AM   #2
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Default Re: What is the difference between these two .21 on road engines???

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Originally posted by mtx3racer
What is the difference between these two .21 on road engines???
.Rear Exhaust .21 PT-21 R Race On-Road
.RX 21 R1 on road
Hi mtx3racer,

They difference is that the PT-21 is the TOP Version (Black Head)
and the RX-21 is the NOVA Version (Purple Head). Its mainly
cosmetics that differentiate the two but they are the same base
motor (Stock to Stock).
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Old 04-19-2004, 10:23 AM   #3
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ok thanks
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