Sinister Custom Concepts

Sinister Custom Concepts Your One stop shop for all Custom needs. We got you Covered so give us a call!

Slammed, Lifted, Restorations, Sheet Metal work, Banging Stereo Systems, Custom Fiber Glass Work, Performance upgrades, etc.

From the vault. making its rounds before the tare down began.
04/17/2026

From the vault. making its rounds before the tare down began.

Air Leaks, Air Ride Maintenance, Upgrades, & Repairs! Bring it on! We got yah covered. Knowledge on rides from the 30's ...
02/04/2026

Air Leaks, Air Ride Maintenance, Upgrades, & Repairs! Bring it on! We got yah covered. Knowledge on rides from the 30's to present! Another day another Ride! Let us help you at whatever stage of the build your in!

10/28/2025

Quick 3" killer upgrade for this 3rd gen . front and rear . Lifted with a stock ride quality! What more could you ask for! Big thanks to for their great customer service answering any question i had with the quickness to get this kit put together. or , We've got you covered. Give us a call for a quote!

10/07/2025

Out with the old, in with the new! From rusted pipes with holes and crusty old mufflers to a fresh double Muffler exhaust tucked up to not drag anymore. 🤘🤑🤘


box added to the built by our friends at . Box pulls air from in front of the radiator through the core suppo...
12/18/2024

box added to the built by our friends at . Box pulls air from in front of the radiator through the core support. 🤑
For build pics, click------> 🙏🙌😂

Man Down!! Happy Halloween!! doing it right with his slammed Cadi we bagged a while back. 🎃
10/31/2024

Man Down!! Happy Halloween!! doing it right with his slammed Cadi we bagged a while back. 🎃

Stoked on this upgrade. Old chrome Harley pop up gas filler was untrustworthy when it came to rain and washing the truck...
09/27/2024

Stoked on this upgrade. Old chrome Harley pop up gas filler was untrustworthy when it came to rain and washing the truck. Definitely a bummer considering the work that went into fitting it. New hinged pop up gas door plus a new proper oem style gas cap gives me a much better piece of mind I'm good to go. Looks cool too 😎. Many hours put into 3 pictures 😆 🤣

🤑 dash. After some cardboard work, another section is complete!
09/13/2024

🤑 dash. After some cardboard work, another section is complete!

Jam packed dash! Brand new 22" Touchscreen HD monitor added to the Dash (replacing the 21" all in one computer it had ...
09/05/2024

Jam packed dash! Brand new 22" Touchscreen HD monitor added to the Dash (replacing the 21" all in one computer it had for years). 16" wheel matching steering wheel as well. With a perfect window to the Gauge Cluster. Next up, a bead rolled Center console. 🍻

Address

20928 Osborne Street, Unit H
Chatsworth, CA
91304

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