Run your dual NP241 setup right — a billet, BBOR-spec twin-stick shifter built to take control of your doubler.

This is the JB Custom Fabrication Dual NP241 transfer case shifter assembly, built to Blazin' Biddles spec for Squarebody Chevy and GMC trucks, K5 Blazers, Jimmys, and Suburbans running a dual transfer case (doubler / twin-stick) setup. If you've built a dual NP241 — or an NP241C / NP248C doubler — to get true low-range crawl gearing, this is the shifter that puts both cases under clean, positive control.

Sloppy, cobbled-together shifter linkage is the weak point of most doubler builds. This assembly is fabricated for precise, repeatable shifts so you can hit high, low, and neutral on both cases without guessing — exactly what you want when you're picking a line on the rocks.

Why It Works

• Built for dual NP241 / doubler setups — purpose-made for twin-stick control of a dual transfer case build.
• BBOR spec — fabricated to the standard we run and trust on our own rigs.
• Positive, repeatable shifts — solid linkage instead of vague, flexy factory-style throws.
• Built for abuse — made for rock crawlers, off-road, and hard-wheeled Squarebody builds.
• Billet shifter knobs — finished hardware, not parts-store filler.

What You Need To Know

• For Squarebody Chevy/GMC trucks, K5 Blazers, Jimmys & Suburbans ('73–'91) running a dual transfer case (dual NP241 / doubler) setup.
• This is a specialty drivetrain part — meant for built trucks, not a stock single-case application.
• Fabricated to order by JB Custom Fabrication.

Not sure if it fits your doubler setup? Text 530-327-8811 or email blazinbiddlesoffroad@gmail.com before you order — we'll make sure it's right for your build.