241J (Modified) 32 Spline Input

Convert your Jeep 241J transfer case to accept a 6L80, 8L90, or 10L80 transmission. Build a bulletproof 4x4 drivetrain with the heavy-duty Wicked Wrench Motorsports 241J Modified 32-Spline Input Shaft Upgrade. This precision-engineered transfer case component is specifically designed for off-road builders performing a modern GM Gen V LT engine swap in a 2007–2018 Jeep Wrangler JK. Standard factory Jeep 241J transfer cases come equipped with an inadequate 21-spline or 23-spline input shaft that cannot handle the massive torque of a V8 conversion, nor will it mate to GM's heavy-duty automatic transmissions. Our 32-spline conversion shaft delivers the exact output-to-input matching profile required to mate your factory Jeep transfer case directly to a GM 6L80, 6L90, 8L80, 8L90, 10L80, or 10L90 transmission. Each input shaft is CNC-machined from ultra-high-strength gear steel, heat-treated for maximum wear resistance, and custom-modified for a seamless, bolt-on layout profile. By upgrading to a heavy-duty 32-spline input, you eliminate the primary weak link in your Jeep JK drivetrain, preventing catastrophic shaft shear under hard acceleration or vertical rock crawling climbs. This modified input shaft perfectly accepts standard GM transmission output shafts when paired with our matching transmission clocking adapter ring. Save your budget by retaining your original, reliable factory Jeep transfer case while giving it the elite structural integrity needed to handle massive V8 horsepower on the trail. #### ⚙️ Product Features & Benefits: * **Heavy-Duty Spline Conversion:** Upgrades standard 21-spline or 23-spline Jeep JK 241J transfer cases to a massive, high-torque 32-spline internal profile. * **Direct GM Transmission Matching:** Engineered to flawlessly accept the factory output shafts of GM 6-speed (6L80/6L90), 8-speed (8L80/8L90), and 10-speed (10L80/10L90) automatic transmissions. * **Premium Machined Steel Construction:** CNC-machined from case-hardened alloy steel and heat-treated to resist gear fatigue and spline twisting under extreme trail abuse. * **Engineered for LS & LT Swaps:** The definitive internal drivetrain upgrade for Jeep Wrangler JK Gen 5 LT1, L83, L86, L87, L8T, and LS3 engine conversion projects. * **Retains Factory 4WD Gear Ratios:** Fits seamlessly inside the OEM 241J transfer case housing without modifying your factory low-range crawl gears. #### 🛠️ Don't Forget the Rest of Your Swap Parts! To complete your transmission-to-transfer-case conversion layout seamlessly, you will need the matching structural adapters. Be sure to grab these matching parts directly from our store catalog: * **8L90/10L90 to Jeep 241J Adapter Spacer and Clocking Ring Kit:** To bolt your transmission up securely with multiple clocking angles. * **Jeep JK 241J Gen V Swap T-Case Beef-Up Bracket:** To fully eliminate shifter cable flex and binding under heavy trail loads.