Understanding Turbocharger Rules in LDR Racing: Why the Bullseye NLX Is 100% Legal
Understanding Turbocharger Rules in LDR Racing: Why the Bullseye NLX Is 100% Legal
There’s a lot of confusion in the Limited Drag Radial (LDR) community about what the rulebook really means when it says “no boreless turbos.” Many racers mistakenly think this excludes Bullseye Power’s NLX series, but that couldn’t be further from the truth.
A boreless turbocharger refers to a compressor wheel design that eliminates the central bore where the main shaft passes through. This approach can increase material strength and reduce rotational stress, which is why many sanctioning bodies restrict them to maintain a level playing field.
The Bullseye Power NLX turbocharger lineup, however, uses a traditional compressor wheel with a standard center bore and shaft retention system. It is not classified as boreless under any current LDR regulations. Each NLX turbo is fully compliant with rulebook specifications while delivering cutting-edge compressor and turbine aerodynamics.
Bullseye’s engineers designed the NLX around advanced bearing and sealing technologies to improve rotational stability, efficiency, and horsepower potential—all while adhering to class-legal design parameters. This means you can run an NLX turbocharger in LDR competition without worrying about tech inspections or rulebook violations.
If you’ve passing over the ultra-powerful flagship NLX lineup because of the “boreless” rule, you’re missing out on a race-proven advantage.
The NLX remains one of the most efficient, durable, and legal turbocharger options available for LDR racers who want to extract maximum power within the rulebook.