Heavy-duty 457x101.6x56 aftermarket replacement rubber tracks for the ASV Posi-Trac HD4520. The 18-inch footprint and Multi-Bar tread are built for dependable traction, flotation, stable travel, and controlled ground contact across dirt, mud, snow, turf, hard surfaces, and mixed jobsites. This MWE/TNT replacement belt uses steel-cord reinforcement and is not an ASV genuine polycord track.
ASV's Posi-Track system is built around internal positive drive, multiple ground-contact points, flexible track engagement, and a suspended undercarriage. Matching replacement-belt geometry and dependable drive-lug engagement help preserve the machine's traction, flotation, stability, low ground pressure, and ride characteristics.
The Multi-Bar pattern uses repeated cross-ground traction edges for frequent surface contact, predictable steering, and dependable grip. It is a versatile choice for grading, site preparation, landscaping, dirt, mud, snow, turf-adjacent work, and mixed construction surfaces.
ASV genuine Posi-Track belts are designed without a steel core and use embedded high-tensile polycord for flexibility. The MWE/TNT replacement track sold here uses a different heavy-duty architecture with continuous joint-less steel cords for internal reinforcement. It is a purpose-built aftermarket replacement, not an ASV genuine track.
Continuous steel-cord reinforcement supports belt strength through repeated steering, travel, pushing, and load cycles. Premium rubber compounds are designed to resist cuts, tearing, chunking, edge damage, and premature abrasion while maintaining controlled flex through the undercarriage.
Inspect drive sprocket rollers, internal drive-lug contact surfaces, roller wheels, idlers, guide areas, debris buildup, alignment, and track tension before installation. Worn components, packed material, or incorrect tension can accelerate belt wear and reduce service life. Set final tension to the applicable service specification for the installed replacement track.
Nationwide fulfillment is available, backed by a 24-month TrackTECH warranty against manufacturing defects and application support when needed.
Tested. Trusted. Proven.
Heavy-Duty Comes Standard.
Tread Pattern Guide
Compare common TrackTECH rubber track tread patterns by traction, ride comfort, surface protection, and jobsite conditions.
Balanced Jobsite Performance
Best for: general construction, dirt, gravel, clay, and mixed jobsite use.
C-Block tracks are a strong all-around option for compact track loaders working across everyday jobsite conditions. They provide dependable traction, a stable ride, and balanced wear life without being overly aggressive on the ground.
Aggressive Traction
Best for: mud, loose soil, slopes, clay, and soft ground.
Zig-Zag tracks use an alternating lug design to improve bite and help the track clean out in loose or wet conditions. This pattern is a strong choice when traction and hillside control matter more than surface protection.
Severe-Duty Terrain
Best for: forestry, mulching, extreme land clearing, and the most severe off-road environments.
Designed for high-horsepower CTLs in dense brush, jagged terrain, and debris-heavy conditions. The most aggressive TrackTECH tread for severe duty — built for durability, puncture resistance, and relentless traction when clearing heavy brush or earth.
Fortified Core Defense: ultra-reinforced center guide deflects stumps, jagged rocks, and sharp forestry debris from the core. Maximum Bite: deep aggressive lugs deliver uncompromising forward drive from deep clay to heavy snowpack.
Trade-off: overkill on sensitive turf or finished pavement — runs rough and will tear up the ground. Ideal surfaces: mulch/brush, deep clay, jagged rock, snow.
Mini Excavator Control
Best for: mini excavators, trenching, grading, utility work, and mixed surfaces.
Directional tracks are commonly used on mini excavators where forward traction, controlled movement, and dependable wear are important. This pattern helps provide predictable movement across dirt, gravel, clay, and general excavation conditions.
Not sure which tread? Use the options on this page, or request a quote.
Fitment, availability, fulfillment, and support for this product
The ASV Posi-Trac HD4520 is matched to 457x101.6x56 rubber tracks for this application. 100% Precision Fitment. Guaranteed.
Available tread patterns vary by track configuration and jobsite. The options shown for the ASV Posi-Trac HD4520 are selected for applications such as construction, dirt, gravel, mud, snow, landscaping and mixed terrain.
Yes. Inspect rollers, idlers, sprockets and track tension when installing replacement tracks. Worn undercarriage components can contribute to uneven wear, poor tracking and reduced service life.
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