The rear idler guides and supports the track at the back of the undercarriage and helps maintain alignment and tension. A worn rear idler shows up as mistracking and accelerated track wear, so it belongs on every undercarriage inspection.
Need the right part number? Rear idler size and mounting vary by machine and serial range. Send your machine make, model and serial range and we will match the correct rear idlers before you order — no guesswork.
Shop Undercarriage Parts
Rear idlers are one piece of the undercarriage system. Worn rollers and idlers accelerate track wear, so it pays to inspect the whole set:
See everything in Undercarriage Parts. Catching wear early on one part protects the whole undercarriage and saves you from replacing tracks before their time.
Shop by Brand
Find rear idlers matched to your machine:
Don't see your machine? Browse all brands or use the Track Finder to find your fit.
Worn rollers, idlers and sprockets are the leading cause of premature track wear. Keep tension to spec and clear packed debris — see how to double your track life.
Heavy Duty Comes Standard
We are technicians by trade, and it shows in every part we ship. Our undercarriage parts are built to OEM-equivalent tolerances with hardened, sealed-and-lubricated construction for long service life under load. Backed by a 24-month warranty, free shipping to the lower 48, and same-day dispatch on in-stock items. Real support, real fitment help — call (850) 816-7898.
Frequently Asked Questions
What is the rear idler's role? It guides the track at the rear of the undercarriage and helps keep it aligned and tensioned alongside the front idler and rollers.
How do I know it is worn? Watch for mistracking, uneven wear, play in the idler, or leaking seals. A failing idler quietly shortens track life.
Can you match it to my machine? Yes — send your make, model and serial range for verified fitment.
Keep your undercarriage tight and your tracks lasting longer. Shop above for free freight, or call (850) 816-7898 to confirm the right part.