Incision HD Jimmy's 4x4 Link Kit Install Guide
By Vanquish Products - Premium RC Crawler Kits & Accessories | Published: 2026-10-30
Category: How-to Guides
Step-by-step instructions for installing the Incision HD Jimmy's 4x4 Link Kit on your RC crawler, with common mistakes and checkpoints for a clean build.
Quick Answer
Install the Incision HD Jimmy's 4x4 Link Kit by removing the old links, fitting the new stainless steel links with the correct orientation, and torquing all hardware to spec—watch for binding and proper clearance.
Why Link Orientation Matters
The Incision HD Jimmy's 4x4 Link Kit includes front and rear 4-link suspension links designed for F10 portal axles with aluminum Vanquish BTA servo mounts. Getting the upper and lower links in the right positions is critical for proper suspension geometry. Swapping them can cause binding or poor articulation.
Because the kit does not include steering links or shift links, keep your existing steering setup. This lets you focus on the suspension links without affecting steering geometry.
What to Check Before You Start
Confirm your build uses F10 portal axles and Vanquish BTA servo mounts. The kit is specifically made for the Harley Designs Jimmys 4x4 Moonbuggy build, so it may not fit other axles or mounts without modification.
Have thread locker, a 2mm hex driver, and a small ruler or caliper on hand to verify link lengths and alignment during installation.
Step-by-Step Installation
- Remove Old Links: Support the chassis and remove the existing suspension links from the axles and chassis. Keep the hardware organized by position. Check for worn or stripped threads before reusing any hardware.
- Install Front Lower Links: Attach the front lower links to the axle and chassis mounts. Use thread locker and snug the hardware but do not fully tighten yet. Ensure the link ends move freely; over-tightening can cause binding.
- Install Front Upper Links: Mount the front upper links in the correct orientation—typically angled inward toward the chassis. Keep them parallel to the lower links when viewed from the side. If links bind, loosen and realign; check for interference with the servo mount.
- Install Rear Lower Links: Repeat the process for the rear lower links, attaching them to the rear axle and chassis mounts. Verify the links do not contact the driveshaft or shock mounts.
- Install Rear Upper Links: Attach the rear upper links, ensuring they follow the same orientation pattern as the front. Keep clearance from the transmission and body mounts. Check that the links do not rub against the chassis rails.
- Set Ride Height and Torque: With the vehicle on level ground, adjust the ride height by positioning the axle and then torque all link hardware to the manufacturer's specification. Cycle the suspension through full travel to confirm smooth action. If any link binds, loosen and realign before final torquing.
Product Facts
- Incision HD Jimmy's 4x4 Link Kit: Includes 8 stainless steel links: 2 front lower, 2 front upper, 2 rear lower, and 2 rear upper. The kit covers the complete 4-link suspension setup for both axles, so you don't need to source separate links.

Incision HD Jimmy's 4x4 Link Kit
