Friday , 20 February 2026

Exotek F1ULTRA R5 Rear Diffuser Set | CompetitionX

Exotek F1ULTRA R5 Rear Diffuser Set | CompetitionX

We’ve seen this F1ULTRA R5 lower diffuser at the track, but now Exotek has made it a reality. 3D printed from nylon, this lightweight diffuser (only 10g) is a direct fit for your F1ULTRA R5 Formula 1 car. It includes mounting screws and, as an added bonus, also protects your spur gear in the event of a crash!

It is also said to provide extra downforce and rear grip!

Quick Stats
Product: Exotek F1ULTRA R5 Rear Diffuser Set
Part #: R4520
Scale: 1/10 Scale
Price: $14.95
Build Type: n/a
BUY NOW: https://alnk.to/cSHVKhb

What We Like:
Aside from being a super-cool looking item, we’re also happy about how it helps protect the spur gear of your car.

What We’re Not Sure About:
Nothing. Great little product.

For more information, please visit: www.exotekracing.com

Gallery

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About Tony Phalen

Tony Phalen - As an avid RC enthusiast, Tony has been building, bashing and racing RC Cars for over 30 years. He has participated in every kind of surface racing events - 1/18 scale trucks, 1/10 scale TC, Rock Racers, Rally - if it had wheels, he's raced it! He's also worked on both sides of the industry fence; collaborating with many major manufacturers (as well as being a sponsored driver) to working for a high-profile industry magazine. During this time he has learned many tricks, tips and techniques and is sharing that knowledge on CompetitionX - the most informative RC website on the internet!

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