What size tracks do ASV machines use?

ASV Track Size Chart

ASV machines in our data use 9 rubber track sizes across 33 models. The most common primary size is 381x101.6x42, on 9 models (PT-50, PT-60, RC-50, RC-60, RT-50 and more).

Track sizes read width (mm) x pitch (mm) x number of links. All three must match your machine. Find your model in the first table; the second shows which ASV models share each size.

Track size by model

Model	Type	Primary size	Width	Pitch	Links	Alternate sizes	Second source
2810 Posi-Track · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	matches
4810 Posi-Track · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	matches
4820 Posi-Track · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	not yet checked
HD4500 Posi-Track · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	not yet checked
HD4520 Posi-Track · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	matches
MD-70 · legacy	Compact track loader	`457x101.6x55`	457 mm / 18 in	101.6 mm	55	—	matches
PT-30 · legacy	Compact track loader	`305x101.6x37`	305 mm / 12 in	101.6 mm	37	—	not yet checked
PT-50 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
PT-60 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
PT-70 · legacy	Compact track loader	`457x101.6x50PS`	—	—	—	—	not yet checked
PT-80 · legacy	Compact track loader	`457x101.6Cx51`	457 mm / 18 in	101.6 mm	51	—	matches
PT-100 · legacy	Compact track loader	`457x101.6x51`	457 mm / 18 in	101.6 mm	51	—	matches
RC-30 · legacy	Compact track loader	`305x101.6x37`	305 mm / 12 in	101.6 mm	37	`305x38x101.6`	not yet checked
RC-50 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
RC-60 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
RC-85 · legacy	Compact track loader	`457x101.6x50`	457 mm / 18 in	101.6 mm	50	—	not yet checked
RC-100 · legacy	Compact track loader	`457x101.6x50`	457 mm / 18 in	101.6 mm	50	—	not yet checked
RCV · legacy	Compact track loader	`457x101.6x51`	457 mm / 18 in	101.6 mm	51	—	matches
RT-25 · legacy	Compact track loader	`280x101.6x37`	280 mm / 11 in	101.6 mm	37	—	not yet checked
RT-30	Compact track loader	`280x101.6x37`	280 mm / 11 in	101.6 mm	37	—	not yet checked
RT-40	Compact track loader	`280x101.6x37`	280 mm / 11 in	101.6 mm	37	`305x101.6x37`	not yet checked
RT-50 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	`381x100.5x42`	matches
RT-60 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
RT-65	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	`381x100.5x42`	matches
RT-75	Compact track loader	`457x101.6Cx51`	457 mm / 18 in	101.6 mm	51	—	matches
RT-75-HD · legacy	Compact track loader	`457x101.6x51`	457 mm / 18 in	101.6 mm	51	—	disagrees
RT-120F · legacy	Compact track loader	`457x101.6Cx51`	457 mm / 18 in	101.6 mm	51	—	disagrees
RT-135F · legacy	Compact track loader	`457x101.6Cx51`	457 mm / 18 in	101.6 mm	51	—	not yet checked
SC-50 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	`381x100.5x42`	matches
SR-70 · legacy	Compact track loader	`381x101.6x51`	381 mm / 15 in	101.6 mm	51	`381x100.5x51`	not yet checked
SR-80 · legacy	Compact track loader	`457x101.6Cx51`	457 mm / 18 in	101.6 mm	51	—	matches
ST-50 · legacy	Compact track loader	`381x101.6x42`	381 mm / 15 in	101.6 mm	42	—	matches
VT-70 · legacy	Multi-terrain loader	`381x100.5x42`	381 mm / 15 in	100.5 mm	42	—	not yet checked

"Second source": whether an independent second seller or catalog lists the same size. "Disagrees" rows are shown, not hidden; check the machine page and your current track before ordering.

ASV track sizes and the models that share them

Size	Width	Primary on	Alternate on	Other brands
`381x101.6x42`	381 mm / 15 in	PT-50, PT-60, RC-50, RC-60, RT-50, RT-60, RT-65, SC-50, ST-50	—	5
`457x101.6x51`	457 mm / 18 in	PT-80, PT-100, RCV, RT-75, RT-75-HD, RT-120F, RT-135F, SR-80	—	7
`457x101.6x55`	457 mm / 18 in	2810 Posi-Track, 4810 Posi-Track, 4820 Posi-Track, HD4500 Posi-Track, HD4520 Posi-Track, MD-70	—	3
`280x101.6x37`	280 mm / 11 in	RT-25, RT-30, RT-40	—	—
`305x101.6x37`	305 mm / 12 in	PT-30, RC-30	RT-40	2
`457x101.6x50`	457 mm / 18 in	RC-85, RC-100	—	—
`381x100.5x42`	381 mm / 15 in	VT-70	RT-50, RT-65, SC-50	—
`381x101.6x51`	381 mm / 15 in	SR-70	—	—
`381x100.5x51`	381 mm / 15 in	—	SR-70	—

"Other brands" counts machines from other manufacturers that list the same width, pitch and link count; the size page lists them.

Before you order

Fitment can vary by serial number. Some sellers write a variant letter inside the size (320x86Bx49) and list those tracks separately; the second table groups them under the base size, so check the exact listing on the model's page. Measure your current tracks and check your operator's manual. How track sizes are written →

More ASV: ASV track and tire sizes by model · ASV solid skid steer tires · all track sizes.

Where this comes from: each size is from the published aftermarket or manufacturer source linked on the model's page (our machine-model dataset), with second-source checks recorded per model.