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Namura Technologies Pistons

This is a discussion on Namura Technologies Pistons within the Yamaha YFM660R Raptor (2001-2005) forums, part of the Performance /Technical category; Anyone have any experiences with these pistons? See quite a few of them on ebay....

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Old 05-10-2005, 11:23 PM   #1
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Default Namura Technologies Pistons

Anyone have any experiences with these pistons? See quite a few of them on ebay.
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Old 05-11-2005, 01:13 AM   #2
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I think they are made from powdered milk and plaster .. not sure
05 Raptor
Current mods:
'05 YFZ Shocks
Dynojet Needle
Yoshi Full System
L&A Airbox Adaptor
Stage 1 HotCam
Wheel Spacers
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Mikuni 165/170
Pilot Jets 27.5
3.0 turns on air screws

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Old 05-11-2005, 01:33 AM   #3
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They are pretty new to the Raptor. I have used them with good success on other bikes such as the Banshee and Blaster. They are a cast piston but they add alot of silicon and teflon coatings which helps for wear. I sent the person selling them a email asking if they make a kit in the (686) .080 bore and how much they weigh. These pistons should be lighter. They have a flat dome so they are probably only available in stock compression. If I didn't want to up the compression I would give one of these kits a try.
2003 719 Raptor--12to1 Piston, HV Ported, Stage 2 Hotcam, FCR39 carbs, Yosh Full Exhaust, and L&A Intake with K&N.
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