The best SIMGASM seat for the Sport cockpit depends on how you race. Choose the Atlas GT for GT and endurance racing, the Atlas Formula for open wheel cars, the Core Bucket for a strong fixed position at a lower budget, and the Core Recline if the seat also serves as a desk chair. All four fit the Sport, because the Sport is an aluminium profile rig that ships without a seat, so you pick the seat and the mounting parts separately.
The SIMGASM Sport is the mid level chassis in the range, between the Club and the Pro. It is built for direct drive wheelbases and load cell pedals, so the seat you put in it should match that level of input. This guide compares the four seats on the Sport and explains which mounting parts you need.
What the Sport cockpit brings to the seat
The frame sets the base for every seat choice, so start with the Sport specs.
A 40 × 120 mm chassis with a 300 kg braking load
The Sport uses a 40 × 120 mm main profile and measures 580 × 1320 × 720 mm (W × L × H). Its pedal deck carries a rated braking load of 300 kg, it has integrated cable routing, and it is motion ready. In practice that means the frame does not flex when you stand on a load cell brake, so the seat becomes the part that decides how stable your body feels.
What is in the box, and what is not
The Sport comes with the profiles, the chassis brackets, the wheel mount you pick at checkout, the Apex side arm for a shifter or handbrake, a heel rest and rubber feet. The seat and the seat slider are not included. SIMGASM advises adding the Dual Locking Seat Slider Set when you want adjustable seat positioning. Our guide on which SIMGASM Sport cockpit to buy covers the colours, mounts and extras.
SIMGASM | Sport Aluminum Sim Racing Cockpit - Orange
Atlas GT or Atlas Formula on the Sport
The Atlas is the premium seat choice, and it suits the Sport because both are built for serious hardware.
Atlas GT for GT and endurance
The Atlas GT gives you an upright, supported position for GT cars, touring cars and endurance racing. It has a sculpted shell, washable memory foam cushions and a predefined bass shaker mounting pattern. It mounts at the sides with the SIMGASM Seat Bracket Set, which is made of 4 mm steel and adjusts the seat height and angle on the Sport frame. If oval racing is your thing, read which sim racing seat suits oval racing.
Atlas Formula for open wheel cars
The Atlas Formula puts you lower and more reclined, like a single seater. The patented Atlas design uses one shared base: add the Formula upper section to an Atlas GT and the matching Formula cushions come with it. So one Sport cockpit with one Atlas base covers both GT and Formula racing.
SIMGASM | Sim Racing Seat Atlas Gran Turismo - Black
Core Bucket or Core Recline on the Sport
The Core seats cost less and still fit the Sport frame well.
Core Bucket for a fixed position
The Core Bucket has a steel frame, pronounced side bolsters and a fixed racing angle. Its 360 × 385 mm bottom bolt pattern pairs with the SIMGASM slider, so it sits on the Sport rails with fore and aft adjustment. It is the logical pick when you want a firm hold under hard braking. Not sure about the hold you need? Read whether side bolsters matter in a sim racing seat.
Core Recline for mixed use
The Core Recline has a leather and suede finish and a backrest that moves to a near vertical position. It also has a 193 × 193 mm pattern for standard office chair mechanisms. That suits drivers who race in the evening and use the seat for work during the day. For racing, a fixed bucket still holds you more consistently.
SIMGASM | Core Bucket Racing Seat - Black
How to mount a seat on the Sport
Mounting follows a simple order, and the right parts make it quick.
Bottom mount or side mount
The Core seats mount from below, directly on a slider. The Atlas seats mount at the sides with the bracket set, which then bolts to a slider or straight to the frame. Check the bolt pattern before you order; our guide on mounting hole spacing for a sim racing seat explains the common sizes.
Set the seat before the wheel
Fix the seat height and slider position first, then set the wheel and pedals to your body. Because the Sport uses aluminium profiles, every part slides along the frame in small steps.
Our verdict
Most Sport owners land on one of two combinations.
The two most common setups
Drivers who race mostly GT and endurance pick the Atlas GT with the bracket set, because it matches the stiffness and the level of the Sport. Drivers who want strong hold for less choose the Core Bucket on the dual locking slider. Browse all sim racing seats or the full Sport sim racing cockpit range to build your setup.
SIMGASM founder and product designer Johan Akkerman designed and led the development of the complete range, from the 3D designs to the final quality check. The seats and cockpits are developed in house from Wijk bij Duurstede, and every product is tested as part of a complete simulator.
Frequently asked questions
Here are quick answers about seats for the SIMGASM Sport.
Does the SIMGASM Sport come with a seat?
No. The seat and the seat slider are sold separately, so you choose the seat that fits your racing style.
Which SIMGASM seat is best for the Sport?
The Atlas GT for GT and endurance, the Atlas Formula for open wheel cars, and the Core Bucket for a strong fixed position at a lower budget.
Do Atlas seats need brackets?
Yes. The Atlas seats mount at the sides with the SIMGASM Seat Bracket Set, which adjusts height and angle.
Can you add a bass shaker to the seat?
Yes. The Atlas shell has a predefined bass shaker mounting pattern, and the Sport frame is also motion ready.
Want to learn more? The SIMGASM experts are happy to help.
