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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|05-11-2005, 12:13 AM||#2|
Join Date: Nov 2004
Location: Tucson, AZ
I think they are made from powdered milk and plaster .. not sure
'05 YFZ Shocks
Yoshi Full System
L&A Airbox Adaptor
Stage 1 HotCam
Pilot Jets 27.5
3.0 turns on air screws
"Evil will always Triumph over Good, because Good is Dumb"
|05-11-2005, 12:33 AM||#3|
Join Date: Nov 2002
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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