The Honda Pioneer HMF Slip-On is available in the Titan and Titan XL Series. The HMF Titan slip-on system picks up 5-10% more horsepower and torque throughout the power curve and weighs substantially less than the stock exhaust. The Honda Pioneer HMF Slip-On is available in the Titan and Titan XL Series. The HMF Titan slip-on system picks up 5-10% more horsepower and torque throughout the power curve and weighs substantially less than the stock exhaust.