The Multiquip 2522350217 Piston Ring Set 0.25 O.S. is a genuine OEM component designed for MT-74FA, MT74FAF, MT-84FA, MTX80, and MTX90 series rammers. This oversized ring set is engineered to restore correct compression and oil control during engine rebuilds where cylinder bore wear has required a 0.25mm oversize hone. As a direct OEM replacement, it delivers the precise dimensional tolerancing needed to bring your rammer's engine back to proper operating condition and extend its service life.
Key Features
- OEM Compression and Oil Control Tolerancing — Manufactured to exact Multiquip specifications, ensuring correct ring-to-bore clearance for this 0.25 oversize application rather than a generic fit.
- Oversize Rebuild Specification — Sized at 0.25 O.S. to seat correctly in a cylinder bored to the first oversize, locking in proper compression sealing from the first start after rebuild.
- Broad Rammer Compatibility — Confirmed fitment for MT-74FA, MT74FAF, MT-84FA, MTX80, and MTX90 rammers, covering both the first- and second-generation MTX tamper platforms.
- Restored Engine Performance — Worn or broken piston rings cause loss of compression, excessive oil consumption, and poor impact energy; a correct-spec ring set brings the engine back to full compaction output.
- Genuine OEM Part — Sourced directly from Multiquip, so material grade, ring profile, and gap specs match the original engine build exactly.
Piston rings form the dynamic seal between the piston and the cylinder wall, maintaining combustion pressure while preventing engine oil from entering the combustion chamber. In a rammer engine, where high-cycle vibration accelerates wear, rings that have lost their tension or are damaged will cause a noticeable drop in compression, hard starting, and weak impact stroke. An oversize ring set — like this 0.25 O.S. version — is installed after the cylinder bore has been machined to remove wear, restoring the tight, consistent seal the engine needs to deliver full power to the compaction mechanism.
Part Details
| Part Number | 2522350217 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Ring Set 0.25 O.S. |
Compatibility & Fitment
| Name | Model |
|---|---|
| Rammers | MT-74FA |
| Rammers | MT74FAF |
| Rammers | MT-84FA |
| Rammers | MTX80 |
| Rammers | MTX90 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
