DNM MK-AR Pit Bike Rear Shock Absorber Rebuild Seal Kit – O-Rings & Oil Seals
Replacement rear shock absorber rebuild seal kit for DNM MK-AR pit bike shocks, containing a selection of internal oil seals, O-rings and sealing components used when servicing or rebuilding compatible shock absorbers.
Ideal for repairing leaking or worn suspension seals, this kit provides replacement sealing components for the DNM MK-AR adjustable rear shock absorber, commonly fitted to pit bikes, dirt bikes, MiniGP motorcycles and supermoto machines.
Over time, shock absorber seals can wear, harden or become damaged, potentially allowing suspension oil to escape and affecting damping performance. Replacing damaged seals as part of a correctly performed shock rebuild can help restore sealing integrity and proper shock operation.
Features
- Designed for DNM MK-AR rear shock absorbers.
- Replacement internal shock absorber sealing components.
- Includes assorted O-rings, oil seals and sealing rings.
- Suitable for servicing leaking or worn shock absorbers.
- Ideal for rear suspension maintenance and rebuilds.
- Replacement components for compatible adjustable DNM MK-AR shocks.
- Useful when rebuilding a shock rather than replacing the complete unit.
- Multiple sealing components supplied together in one kit.
Fitment / Compatibility
- Shock Manufacturer: DNM
- Shock Model: MK-AR
- Application: Rear Shock Absorber
- Component Type: Internal Rebuild Seal Kit
- Damper Shaft Diameter: 14mm (DNM MK-AR specification)
- Common Vehicles: Pit Bikes, Dirt Bikes, MiniGP & Supermoto Motorcycles
Intended for compatible DNM MK-AR rear shock absorbers, including versions used on a wide range of pit bikes and off-road motorcycles.
The MK-AR shock is available in different eye-to-eye lengths and spring rates. Compatibility is determined by the shock's internal seal arrangement rather than its overall length.
Important: Please confirm your shock is a DNM MK-AR and compare the existing internal sealing components with the product photograph before purchasing. Compatibility with other DNM shock models is not guaranteed.
Package Includes
- Assorted replacement shock absorber O-rings.
- Replacement oil sealing components.
- Internal sealing rings and associated rebuild components.
- Additional seal kit components as pictured.
Supplied as one complete seal kit containing the components shown in the product photograph.
Shock absorber, coil spring, damper shaft, suspension oil, nitrogen and specialist fitting tools are not included.
Basic Shock Rebuild Guide
Important Safety Information: DNM MK-AR shock absorbers contain pressurised gas and suspension oil. Disassembly must only be undertaken by someone with the appropriate suspension servicing knowledge, tools and equipment.
- Identify the Shock: Confirm the shock absorber is a compatible DNM MK-AR model and check the replacement seal components against the originals.
- Remove the Shock: Support the motorcycle securely and remove the shock absorber following the manufacturer's instructions.
- Depressurise Safely: Have the gas pressure released using the correct suspension servicing equipment and manufacturer procedure before disassembly.
- Disassemble the Shock: Use appropriate specialist tools to access the internal sealing components, following the manufacturer's service instructions.
- Inspect Internal Components: Check the damper shaft, shock body and internal surfaces for scoring, corrosion, bending or other damage.
- Replace the Seals: Remove worn sealing components and install the corresponding replacements using approved assembly methods and compatible lubrication.
- Reassemble: Rebuild the shock using the manufacturer's specified components, suspension fluid and assembly procedure.
- Bleed and Recharge: Correctly bleed the hydraulic damping system and recharge the gas chamber using the appropriate specialist equipment and specified pressure.
- Final Testing: Inspect for leaks, confirm smooth shock movement and check damping performance before reinstalling on the motorcycle.
Fitting Tip: If a shock absorber is leaking oil, inspect the damper shaft carefully. A scratched, corroded or damaged shaft can quickly damage replacement seals and cause further leakage.
Frequently Asked Questions
Will this seal kit fit a DNM MK-AR rear shock absorber?
This kit is intended for compatible DNM MK-AR rear shocks. Always check the exact shock version and compare the original sealing components before ordering.
What does a DNM MK-AR shock rebuild kit do?
The kit provides replacement sealing components used during shock absorber servicing. These help contain suspension oil and maintain sealing integrity within the shock assembly.
Can this kit repair a leaking DNM shock absorber?
It may be suitable where the leak is caused by worn or damaged seals. However, the damper shaft, shock body and other internal components must also be inspected, as damaged surfaces can cause continued leakage even after fitting new seals.
Will this fit different lengths of DNM MK-AR shocks?
DNM MK-AR shock absorbers are available in several lengths. The overall length does not by itself determine seal compatibility. Check the shock model and internal component dimensions before purchasing.
Will this kit fit a DNM MTG or other DNM shock model?
Compatibility with DNM MTG, MK-BAG and other shock absorber models has not been confirmed. Different shock designs may use different internal sealing components.
What causes a rear shock absorber to leak oil?
Common causes include worn oil seals, damaged O-rings, corrosion or scoring on the damper shaft, contaminated suspension fluid and general wear to the internal sealing components.
Can I rebuild my DNM shock at home?
Shock absorber rebuilding requires specialist tools, appropriate technical knowledge and equipment for safely handling the pressurised gas chamber. Professional suspension servicing is strongly recommended.
Does this kit include suspension oil?
No. Suspension oil is not included. Use the correct fluid specification and quantity recommended by the shock manufacturer.
Does the shock need to be recharged with nitrogen after rebuilding?
Where the shock has been fully disassembled and depressurised, the gas chamber must be correctly recharged according to the manufacturer's procedure. This requires suitable specialist equipment.
Will replacing the seals restore my shock absorber?
Replacing worn seals can help restore sealing performance, but the overall condition of the damper shaft, piston, internal valves and shock body must also be assessed. A seal kit cannot repair damaged mechanical components.
Important Notes
- Intended for compatible DNM MK-AR rear shock absorbers.
- Supplied as a replacement seal and O-ring kit only.
- Check the original seals and shock model before purchasing.
- Not guaranteed to fit other DNM shock absorber models.
- Shock absorbers contain pressurised gas and must be handled safely.
- Specialist servicing, bleeding and gas charging equipment may be required.
- Suspension oil and nitrogen are not included.
- Professional suspension servicing is strongly recommended.
- Shock absorber and other suspension components are not included.
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