If you’re researching TREQ profile sizes explained, you’re probably trying to answer one simple question: will this rig stay rigid, feel adjustable, and support future upgrades without turning into a messy project?

Aluminium profile rigs (often called “8020 rigs”) are popular because they let you move everything: wheel height, wheel distance, pedal angle, pedal height, seat position, monitor position, and accessory placement. But not every profile rig delivers the same real-world experience.

Profile size is not just about strength

People talk about profile size like it’s a “bigger is better” contest. In reality, profile size affects three things you will notice every day:

• Stiffness under wheel torque and pedal force
• Adjustment range (how far you can move hardware without weird brackets)
• Build cleanliness (space for routing and accessory mounting)

What each profile size feels like in practice

Using TREQ rigs as examples

TREQ’s lineup makes the profile-size concept easy to understand:

• Entry-level rigs sit closer to the 40×40 / lighter 8020 idea (think “get started and upgrade later”).
• TREQ One represents the classic 80×40 “do it all” category.
• TREQ CXX is a 120×40 based approach if you want extra headroom and a clean look.
• TREQ Ace moves into 160×40 flagship territory for maximum stiffness and modularity.

The SIMGASM tier match

SIMGASM mirrors this logic in a straightforward way:

• SIMGASM Hobby simulator is the entry point when you want the price low but still want profile modularity.
• SIMGASM Club simulator is the universal 80×40 tier that fits almost all peripherals.
• SIMGASM Sport simulator adds size, adjustability, and cleaner routing with 120×40.
• SIMGASM Pro simulator is 160×40 flagship stiffness with thick plates for truly flex-free builds.

Decision rule that works for most people

• Controller or gear-driven wheel today: start entry level, plan the upgrade.
• Load cell + mid torque DD: 80×40 is the safe bet.
• High torque, heavy pedals, tactile, or motion: 120×40 or 160×40.

Continue reading

• Direct drive torque explained: how much Nm do you really need
• Steering angle guide: wheel rotation, soft lock and car types
• Triple monitors vs ultrawide vs VR for sim racing

More TREQ guides

• TREQ Rookie vs SIMGASM Hobby: choosing your first aluminium profile cockpit
• TREQ One vs SIMGASM Club: 80x40 rigs for direct drive and load cell pedals
• TREQ CXX vs SIMGASM Sport: 120x40 rigs for clean builds and big upgrades
• TREQ Ace vs SIMGASM Pro: 160x40 rigs for motion and high torque

What actually creates flex in a profile rig

Flex is rarely “the profile size alone”. It’s usually the combination of:

• Lever length: long uprights amplify movement at the wheel.
• Connection style: small brackets vs larger plates, and how well they are tightened.
• Pedal leverage: high-force brakes reveal movement quickly.

This is why a well-designed 80×40 rig can outperform a poorly assembled 120×40 build.

FAQ

• Is bigger profile always better?
  Bigger profiles add stiffness and adjustment range, but they also add cost and footprint. Choose the smallest size that meets your upgrade plan.
• What matters more: profile size or wheel mount design?
  Both matter. A strong wheel mount on a smaller rig can outperform a weak wheel mount on a bigger frame.
• Will 80×40 handle direct drive?
  In many cases yes, especially at moderate torque, but high torque and heavy peripherals may benefit from 120×40 or 160×40.
• Why do people go 160×40?
  For motion readiness, extreme rigidity, and maximum modularity over years of upgrades.
• What’s the biggest benefit of profile rigs?
  You can change ergonomics and layout without replacing the whole cockpit.