Replacement Polaris Wideband O2 Sensor - 18mm Aluminum Roof The Big Mouth features alone

The Big Mouth features alone will net you 6-7 wheel horsepower with the stock tune and valve CLOSED

Designed for trail

Ease the governor cup removal process and eliminate potential damage to your clutch

Our plate allows your rear suspension to have a better feel while reducing stress on the radius rod bolts

Complete Mechanical Chambered Design

Replacement Polaris Wideband O2 Sensor - 18mm Aluminum Roof The Big Mouth features aloneReplacement Polaris Wideband O2 Sensor 18mm This is an excellent high quality sensor replacement (OEM sensor is $230). The O2 sensor will trim fuel, so instead of deleting it we suggest replacing it for optimum running and peak performance. If your RZR has this sensor this is a great spare to carry if you run into an issue Models this sensor fits: 2019 2021 RZR Turbo & Turbo S, RZR Pro XP Only select 2019 2020 RZR Turbo & Turbo S models use this