Stifflers

Stifflers Passion Hoodie! They are finally here!!! Get your Stifflers Hoodie today! Our new hoodies are 8.5 oz., 80% cotton / 20% polyester blend and help make a perfect statement. Available sizes:...

Easy Bolt-In  Kit for your 6R80, 10R80 or MT82 Swap! (’65 - '70 Mustang)This kit comes with all you need to install a 6R80, 10R80 or MT82 transmission in any 65-70 Mustang!  At...

Having Problems with your Exhaust? Some aftermarket exhaust systems don't play well with the rear cross bar on our Lightning, Harley Davidson and SuperCab/Crew stiffening systems. If yours...

Stifflers' Driveshaft Safety Loop Engineered to exceed NHRA regulations. Doesn't get much simpler than this, bolts directly to transmission mount. Quick and easy bolt-in application...

Stifflers' Driveshaft Safety Loop Engineered to exceed NHRA regulations. This one of a kind driveshaft safety loop will save you and your investment from the destructive effects of a broken...

Stifflers' Driveshaft Safety Loop Engineered to exceed NHRA regulations. This one of a kind driveshaft safety loop will save you and your investment from the destructive effects of a broken...

Stifflers' Driveshaft Safety Loop For your Turbo-400 & 4L80E Transmissions! This one of a kind driveshaft safety loop will save you and your investment from the destructive effects of a...

Cheap Insurance for your Lightning! Designed to integrate with ONLY our Lightning Stiffening System (LCB-FT01), this driveshaft safety loop gives you security and peace of mind from the destructive...

Cheap Insurance! Designed to integrate with our Harley Davidson, SuperCab or SuperCrew Stiffening Systems, this driveshaft safety loop gives you security and peace of mind from...

The perfect compliment to Stifflers F150 Upper Control Arms for better handling!  Stifflers lower control arms for 1997-2004 2wd F150s, Lightnings and Harley Trucks are here! These new...

The perfect compliment to Stifflers F150 Upper Control Arms for better handling!  Stifflers lower control arms for 1997-2004 2wd F150s, Lightnings and Harley Trucks are here! These new...

A Stiff Harley is a Happy Harley! It's a known fact; during acceleration, cornering and braking your chassis will flex and twist. The more power you add or the stiffer the suspension,...

Get all the performance from your Lightningby installing Stifflers' Brace System! It's a known fact; during acceleration, cornering and braking your chassis will flex and twist. The more power...

Got Wheel Hop? Stifflers Long Bar Traction System will help make wheel hop a thing of the past by minimizing axle rotation (leaf spring wrap) so you can put the power to the ground. Our chromoly...

The Ultimate Combo for Your F150, Lightning or Harley Truck When Paired with Stifflers Lower Control Arms!  This industry leading Ridetech HQ Series coil-over shock kit has been developed...