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This ARP performance fastener, stud, bolt, tool, or assembly is the 86.0mm Ring Compressor. Confirm the exact engine or vehicle application, thread size, length, material, strength series, included quantity, installation lubricant, tightening sequence, and current ARP torque specification before ordering.
Key Features
- Thread, length, material, strength series, and included quantity are exact-part specific
- Engine, vehicle, component, and installation requirements must match the current ARP application
- This ARP 86.0mm Ring Compressor is a precision tool for installing pistons in 86mm bore engines found in Honda K20-equipped Civics, RSX, Type R and Nissan SR20DET 240SX.
- It applies even pressure to compress rings smoothly during cylinder insertion, preventing damage and ensuring leak-free seals for high-performance rebuilds.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| Universal or specification-matched application. Verify every dimension, interface, load or operating requirement, and listing note. | |||
Specifications
| Brand | ARP |
|---|---|
| Manufacturer Part Number | 901-8600 |
| Product Type | Tools |
| Condition | New |
| Configuration | 86.0mm Ring Compressor |
| Exact 86.0mm Sizing | Matches Honda K20 and Nissan SR20DET bores for secure ring compression without slippage or distortion |
| Durable Construction | High-strength materials resist cracking and wear through repeated high-heat engine builds |
| Tapered Design | Gradually compresses rings as piston enters bore, reducing risk of ring breakage or misalignment |
| Application-Specific Engineering | Developed by ARP for popular performance engines, includes matched components for quick setup |
| Easy Identification | Clear size markings speed up tool selection in busy shops or garages |
| Q | Will this fit Honda K24 engines? A: No, designed for 86.0mm bores like K20 series. K24 uses 87.0mm compressor such as ARP 901-8700 |
| Method | UPS Ground |
| Availability | In stock - ships same or next business day |
| Packaging | 7 x 5 x 3 inches secure box |
| Weight | 0.50 lbs net, 0.80 lbs shipping |
| Key Features Exact 86.0mm Sizing | Matches Honda K20 and Nissan SR20DET bores for secure ring compression without slippage or distortion |
What's Included
One new ARP tool in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.
About ARP
Automotive Racing Products manufactures high-performance studs, bolts, nuts, washers, wheel hardware, assembly tools, and installation lubricants for engine, drivetrain, chassis, and racing applications. Thread dimensions, material, preload method, lubricant, torque, and included quantity remain exact-part specific.
Important Disclosures
- California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.
Related Parts
- Shop all ARP products
- ARP 4.055in Ring Compressor
- ARP 4.110in Ring Compressor
- ARP 4.2125in Ring Compressor
Frequently Asked Questions
How do I confirm the 86.0mm Ring Compressor fits my application?
Match the exact engine family or vehicle, component location, thread diameter and pitch, under-head length, material, strength series, and every current ARP application note.
Can I reuse the factory torque value with this ARP hardware?
Not automatically. Use ARP's current instructions for the exact part, material, lubricant, tightening sequence, and preload method. Factory torque values may be based on different hardware and friction.
What is included with this ARP kit?
Only the studs, bolts, nuts, washers, lubricant, and tools expressly listed for this exact part number are included. Verify the required quantity before disassembly.
Installation Instructions
- Confirm ARP part number 901-8600, the complete application, and every required supporting component before beginning work.
- Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
- Follow ARP's current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
- Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.
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