Bottom rollers (lower rollers) carry the machine's weight against the ground side of the track. They take the hardest load in the undercarriage, so worn bottom rollers are one of the most common causes of rough running and premature track wear.
Need the right part number? Bottom roller dimensions and mounting vary by machine and serial range. Send your machine make, model and serial range and we will match the correct bottom rollers before you order — no guesswork.
Shop Undercarriage Parts
Bottom rollers 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 bottom rollers 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 do bottom rollers do? They support the weight of the machine on the ground side of the track and keep it tracking straight. They wear faster than top rollers because they carry more load.
When should I replace them? Replace when you see flat spots, leaking seals, excessive play, or uneven track wear. Catching it early protects the track.
Do you match by machine? Yes — send your make, model and serial range and we confirm the correct bottom roller.
Keep your undercarriage tight and your tracks lasting longer. Shop above for free freight, or call (850) 816-7898 to confirm the right part.