UTV Blow Off Valve

Why Does Your Turbo Vehicle Need a UTV Blow-Off Valve?

A UTV blow-off valve, or BOV, protects your turbo system by venting excess boost pressure when the throttle closes. On a stock Polaris RZR XP Turbo, the factory BOV is plastic and tends to warp over time, letting boost leak and costing you horsepower. An aftermarket blow-off valve kit replaces that weak link with a machined billet aluminum unit designed specifically for turbo vehicles. Brands like Aftermarket Assassins and RPM Powersports build their BOV kits to fit directly onto the stock plenum, so installation is straightforward and does not require cutting into your boost tube system. Many kits also include an optional air filter or pre-filter to keep dirt and dust out of the vent port, which is a smart addition for riders who spend time in muddy or dusty conditions.

The biggest reason to upgrade the blow-off valve on a Polaris RZR is throttle response. When you lift, a properly set-up BOV relieves pressure instantly and keeps the turbo spinning instead of letting boost back up against a closing throttle plate. That means faster spool on the next acceleration and cleaner power delivery throughout the run. Options include valves that recirculate air back through the system to help prevent dirt ingestion, and true vent-to-atmosphere setups that produce the signature BOV sound.

Why Choose Fueled UTV?

Fast shipping

Most orders ship the same day from our warehouse.

100,000+ SKUs in stock

The largest UTV parts selection online

Real support

Talk to riders who know and can help you find the right fit.

FAQ 

What is a UTV blow-off valve and what does it do?

A blow-off valve (BOV) releases excess boost pressure from the intake system when the throttle closes. This protects your turbo vehicle from pressure spikes and helps maintain throttle response on the next acceleration.

Does a blow-off valve kit fit the Polaris RZR XP Turbo?

Yes. Aftermarket Assassins and RPM Powersports both produce blow-off valve kits designed specifically for the Polaris RZR XP Turbo, as well as the Pro XP, Turbo R, and Pro S. Each kit replaces the factory plastic BOV and mounts in the same location.

Are blow-off valve kits available for the Can-Am Maverick X3 and Maverick R?

Yes. Fueled UTV carries BOV kits for the Can-Am Maverick X3 from brands like RPM Powersports, Evolution Powersports, and Aftermarket Assassins. The Maverick R is also covered, with BOV kits from Evolution Powersports and Aftermarket Assassins designed specifically for that platform.

Will an aftermarket blow-off valve improve horsepower?

A warped or leaking factory BOV lets boost pressure escape, which reduces power output. Replacing it with a machined billet aluminum unit that seals correctly helps prevent that boost loss. The power gain comes from keeping your system airtight, not from the valve itself producing extra horsepower.

Do most blow-off valve kits include an optional air filter or pre-filter?

Many kits do include an optional air filter or pre-filter for the vent port. The Aftermarket Assassins kit and the RPM Powersports kit both include a filter for riders who run the valve open to the atmosphere. The filter is not required since positive pressure only exits the valve, but it adds a layer of protection against dust ingestion.

How difficult is it to install a UTV blow-off valve?

Most blow-off valve kits are straightforward bolt-on installs regardless of model. The typical process involves removing the factory clamps and OEM valve, slipping the new BOV onto the boost tube, and tightening the supplied clamps. No drilling or custom fabrication is required for most applications.

What brands carry UTV blow-off valve kits at Fueled UTV?

Fueled UTV stocks UTV blow-off valve and BOV kits from Aftermarket Assassins, RPM Powersports, Trinity Racing, Evolution Powersports, and Ibexx. Fitment options cover the Polaris RZR XP Turbo, Turbo S, Pro XP, Turbo R, Pro S, the Can-Am Maverick X3, and the Can-Am Maverick R.