Purchased this clutch to help low end torque and belt engagement. It really woke it up with 30" roctane x2 tires. This kit really helped with the harsh and jerky engagement. Clutch kit seems to be a 2250 rpm stall. Back shift when letting off and nailing the throttle is so much more responsive. I did not seem to loose any top end speed and had the buggy 70 mph on slight uphill pull. Instant torque when nailing throttle especially in low range. Only thing I'm unsure about is the helix that came with kit because of less responsive engine braking, I will give it a shot and if it becomes cumbersome I will reinstall the original. It's nice having engine braking do we will see.