ASP FS91AR - Assemblée Culasse

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Customer Rated

Feb 18, 2014

Great value and comes with valve, looks very good quality, but on fitting it to my ASP91 I couldn't get the head to seat if I had the o-ring seals on the pushrod tubes. Comparing this with the original cylinder head I noticed that the casting around where the pushrod tubes come in was slightly deeper. Not sure if this is because ASP changed the design in production or whether this is a fault, hence the rating above.

Head fits OK if you leave the pushrod seals off and then the pushrod tubes can rotate. Note run it yet so will see if this affects running.

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Certified Buyer Rated

Dec 29, 2012

Excelente produto. Pratico e facil de montar.

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Certified Buyer Rated

Jun 24, 2011

Super Zylinder kopf mit ventile alles da 5 Sterne und preis bast auch

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Customer Rated

Jun 10, 2011

If you are wondering if this part will fit your Magnum RFS.91, It does. You get what is shown in the picture. remember to remove the head shims from your old head. I replaced the head, adjusted the valves, and flew three tanks of fuel. My engine has more compression now then it had when new.

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Certified Buyer Rated

Jun 04, 2011

Good repair parts for my ASP FS 91, very cheap and standart ASP quality. I wait for this parts, we will see or are equipped with valves.