Searched but didn't find any threads about anyone using one here. Supposedly doesn't stretch and less likely to slip. Ordered one of these to try in stock size.
RPM (Racing, Performance, Muscle) is a new, no compromise belt built specifically for supercharged applications.
Whereas 99% of all belts on the market today use a polyester tensile cord, the RPM series uses an aramid tensile cord. This is the same fiber found in bulletproof vests and is 10x stronger than steel and 5x less elastic than polyester. When polyester heats up (which it does even from normal use) it will stretch out. As you can imagine, when that belt stretches out you experience belt slip and boost loss. Eventually the elastic properties of the polyester will fail and the belt that was once 100” will stretch to 100.25”, at which point the tensioner can no longer compensate for the stretch and generally results in belt failure.
Due to the strength and minimal elasticity of aramid fiber, the RPM series of belts will not stretch which allows the belt to maintain its true length throughout its service life. This results in more consistent boost and in some instances, users have reported a 1-2psi increase merely from switching from HD belts to RPM belts. We actually have some user submitted under hood video on our Instagram page (GatesRPM) that clearly demonstrates the difference between polyester and aramid corded belts.
Another main benefit of the RPM line is the use of two layers of adhesion gum. These layers create a sandwich around the tensile cords which transfers the load to the strongest part of the belt; the jacket (or smooth backside of the belt). FleetRunner HD belts got a reputation for strength because they use one layer of adhesion gum, standard micro-v belts forgo any adhesion gum.
RPM (Racing, Performance, Muscle) is a new, no compromise belt built specifically for supercharged applications.
Whereas 99% of all belts on the market today use a polyester tensile cord, the RPM series uses an aramid tensile cord. This is the same fiber found in bulletproof vests and is 10x stronger than steel and 5x less elastic than polyester. When polyester heats up (which it does even from normal use) it will stretch out. As you can imagine, when that belt stretches out you experience belt slip and boost loss. Eventually the elastic properties of the polyester will fail and the belt that was once 100” will stretch to 100.25”, at which point the tensioner can no longer compensate for the stretch and generally results in belt failure.
Due to the strength and minimal elasticity of aramid fiber, the RPM series of belts will not stretch which allows the belt to maintain its true length throughout its service life. This results in more consistent boost and in some instances, users have reported a 1-2psi increase merely from switching from HD belts to RPM belts. We actually have some user submitted under hood video on our Instagram page (GatesRPM) that clearly demonstrates the difference between polyester and aramid corded belts.
Another main benefit of the RPM line is the use of two layers of adhesion gum. These layers create a sandwich around the tensile cords which transfers the load to the strongest part of the belt; the jacket (or smooth backside of the belt). FleetRunner HD belts got a reputation for strength because they use one layer of adhesion gum, standard micro-v belts forgo any adhesion gum.
Senior Member
I also have been looking, as mine is due for replacement. What part number did you order? K080507RPM
Where did you order it from?? I tried finding the one i needed to give it a try but no luck 080560rpm and its in there size chart so i sent a message to gates hopefully i can give it a try an see how wks.
K080507RPM from Rockauto, they have it for $44 plus shipping. Should be here soon.
Senior Member
Quote:
all of my sources say out of stock until further notice.Originally Posted by E55amg0220
I need a K080560rpm thats the size i need.
Quote:
Thanks boss thats what mine say tooOriginally Posted by b16gsr
all of my sources say out of stock until further notice.
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ExploreI have used and ran these belts since they came out. The keys is getting the right length , so the tensioner has enough room to take up the pounding. We offer them with our belt wrap kits per request but they do cost about double the price but also offfer the green HD belt.

