Evolution Powersports Bad Ass Drive Belts by Geiser Performance

World's Best Belt (WB)

This belt is for the rider / racer that is looking for the ultimate in belt technology and proven performance. This belt acts like the OEM belt in terms of engagement and operating RPM's.

• Race Proven Performance
• Manufacturing, quality control certifications: ISO-14001, ISO-9001, and IATF-16949
• The Strongest Belt on the Market, surpassing even our EX and SS Belts
• 3rd Generation heavy-duty, high-twist Aramid Fiber cord for HIGH HORSEPOWER TENSILE LOAD requirements
• Highest shock load rating to date being able to withstand the power of the 400HP machines
• Increased top cog pressure load design that increases sidewall rigidity, prevents top cog bowing, but still allows for increased rotational flexibility.
• Bottom Cog uses HIGH MODULOUS RUBBER COMPOUND (BZX1) for better heat resistance and heat dissipation
• Bottom cog is impregnated with short Aramid Fibers for better belt-to-sheave adhesion and reduced overall belt temperature
• Latest bottom cog design for greater rotational efficiency at full shift
• Precision ground sidewall angle (SCUFFING) for smooth engagement, increased power transfer and lower operating belt temperature
• Aramid Fiber Cord (vs Polyester) wraps over bottom cogs for increased bottom cog strength and increased cord pop-out resistance

Sand Storm Belt (SS)
The SS Belt is built for the extreme heat, dirt and dust from the dunes/desert. This is a great all-around belt that acts like the OEM belt in terms of engagement and operating RPM's.

• Next Generation high-twist Aramid Fiber cord for HIGH HORSEPOWER TENSILE LOAD requirements
• Bottom cog is impregnated with short Aramid Fibers for better belt-to-sheave adhesion and reduced overall belt temperature
• Latest bottom cog design for greater rotational efficiency at full shift
• Encapsulated Aramid Fibers in cord to increase rotational strength and lower overall cord friction
• Precision ground sidewall angle (SCUFFING) for smooth engagement, increased power transfer and lower operating belt temperature
• Aramid Fiber cord versus polyester, wraps over bottom cogs for increased bottom cog strength
• Increased cord pop-out resistance
• Increased top cog pressure load design that increases sidewall rigidity, prevents top cog bowing, but still allows for increased rotational flexibility

Extreme Belt (EX)
The EX Belt is built for the extreme abuse of the trail / mud riders that need a ton of belt squeeze to stop from slipping the belt. This belt set the industry standard for extreme performance and reliability. Running this belt changed our driving habits and allowed us to drive our vehicles to the limit without the fear of premature belt failure.

The specific compounds in this belt make the engagement quicker while lowering the peak engine operating speeds by about 200 RPM's.

• Built for High Temps, Extreme Abuse & Excessive Shock Load
• Made with Ultra-Strong Aramid Fiber Cord - Can handle/carry more than 10,000 pounds of tension without stretching or breaking
• Higher Strength - Up to 4X stronger than OEM and other aftermarket drive belts
• Developed with a high-temperature compound called DUMAX for added strength, flexibility, and heat resistance
• DUMAX can be squeezed a lot harder for more tuning possibilities and less slippage
• Maximum Under-Cord Stiffness - Allows the belt to flex for rotational efficiency and running cooler temperatures