MARTZSPEC / BMW INTERIOR MODIFICATIONS
Your BMW. Reimagined inside.
Steering wheels, custom seat kits and the interior details that make every drive your own.
STEERING WHEELS · SEAT KITS · INTERIOR DETAILS
YOUR INTERIOR. YOUR SPEC.
BUILD YOUR INTERIOR
Every detail. More you.
OUR BESTSELLING CATEGORY
A better connection to every drive.
Choose your steering wheel. Make it your spec.
F-chassis Leather Steering Wheel
From $649.00
Configure your wheel
F-chassis Alcantara Steering Wheel
From $749.00
Configure your wheel
F-chassis Carbon Steering Wheel
From $849.00
Configure your wheel
F-chassis LED Carbon Steering Wheel
From $949.00
Configure your wheel
BEYOND THE STEERING WHEEL
Build a cabin that feels like yours.
Custom seat kits, carbon details and interior lighting. Bring the rest of your BMW interior together, one upgrade at a time.
Shop the interior range ↗KNOW BEFORE YOU BUILD
The right spec starts with fitment.
Start with your BMW.
Confirm your year, model, chassis and existing components. Product-specific compatibility matters.
Choose the complete setup.
For F-chassis steering wheels: if your car does not have a round airbag, select the airbag and buttons option on the product page.
Know what happens next.
Review every option in your cart. Made-to-order wheels take 12 business days to produce before shipping.
Do you only sell steering wheels?
No. MartzSpec is a BMW interior modification store. Explore steering wheels, steering wheel accessories, custom seat kits and other interior pieces.
When will my custom wheel arrive?
Production takes 12 business days before dispatch. Shipping then takes an estimated 7–10 business days, for an estimated 19–22 business days total. Holidays, destination and carrier delays may affect delivery. Other items follow their product-specific shipping details.
Do I need to buy the airbag and buttons?
All F-chassis models without a round airbag need the airbag and buttons option selected on the steering wheel product page. If your existing wheel has a round airbag, confirm compatibility before choosing to reuse your components.
Where can I find installation help?
Our steering wheel pages include two installation reference videos for F-chassis M and M-sport models with the round airbag only. They are not non-round-airbag conversion guides. Professional installation is recommended for airbag and steering components.
What if I need to change or return an order?
Review the current refund policy before ordering, especially for made-to-order items. Contact MartzSpec promptly about changes or order issues.