Darton MID Sleeves & Cylinder Sleeve Kits | In-Stock | EDO Performance

If you’re pushing boost, RPM, or big bore, factory cylinder walls are the weak link. Darton Sleeves are the fix: high-strength ductile iron sleeves and MID™ (Modular Integrated Deck) sleeve kits designed to reinforce the deck area, improve sealing, and survive power levels that crack or distort OEM liners.

EDO Performance is direct with Darton and has worked with them for 20+ years. We’re also one of the largest stocking distributors in the USA, and we ship worldwide—so you can get the right sleeves without waiting on endless backorders.

Why Darton MID™ sleeves

Darton’s MID™ system uses interlocking/flanged sleeves that create a reinforced “integrated deck” effect, with benefits that matter when things get serious: stronger block integrity, better cooling, improved sealing/oil control, and higher horsepower/boost potential.
Darton also calls out their ductile iron strength (130,000+ psi tensile) for MID applications—this is purpose-built material, not generic liner stock.

MID sleeves vs Dry sleeves vs Repair sleeves

• MID™ Sleeve Kits: best for high boost/high HP builds where deck support and cylinder stability are the priority.

• Dry Sleeves: a strong replacement liner option when you want a tougher bore surface and more boring flexibility than stock.

• Repair Sleeves: ideal for fixing damaged cylinders or restoring blocks without stepping up to a full MID kit (when your build goals don’t require it).

Common engine platforms Darton supports

Darton produces MID sleeves across a wide range of import and domestic engines (4/6/8-cylinder).
Popular examples include Honda/Acura (K20, K24 and more) and Subaru (EJ20, EJ25)—and many others across Ford/GM/Toyota/Nissan/Porsche platforms.

What to expect for installation

Sleeving is precision machine work. Darton provides installation manuals and technical resources—your machine shop matters, and clear instructions matter.
If you’re not sure what kit your block needs (bore goal, power goal, piston choice, head sealing strategy), contact us and we’ll point you at the correct Darton solution.

Protect Your Fresh Sleeve Build While It Waits

Machine work + assembly + tuning can mean days or weeks of downtime. Surface corrosion can start during storage, and microscopic rust can affect the crosshatch and ring seal.

Why Foggit (for sleeved + modern builds):

• Helps protect cylinder walls + valves during downtime/storage (especially humidity)

• Clings where it’s sprayed (not watery runoff into the pan)

• Great add-on for E85/ethanol builds and seasonal storage

EDO recommended method (most controlled):

1. Remove spark plugs

2. Spray Foggit into each cylinder (~3 seconds)

3. Turn engine over slowly by hand to distribute

4. Let it sit, then rotate again

Why Buy From EDO

• Direct with Darton for 20+ years (real support, not guesswork)

• One of the largest US stocking distributors (less waiting, fewer surprises)

• Worldwide shipping + responsive availability checks

• Builder-friendly help: confirm engine platform, bore goal, and sleeve type before you order

✅ Shop the Darton MID Sleeves & Cylinder Sleeve Kits

Pack-size line

“Available in Pack of 1 / 2 / 3 / Case (12).”

FAQ

What are Darton MID™ sleeves?
MID™ (Modular Integrated Deck) sleeves are interlocking/flanged sleeves designed to reinforce the upper deck area, improve cooling, and increase high-boost/high-HP capability.

Do I need MID sleeves or dry sleeves?
If you’re chasing serious boost/HP and want maximum deck/cylinder stability, MID is typically the move. Dry sleeves are a strong upgrade/replacement option when deck reinforcement isn’t the main goal.

Can Darton sleeves be installed by any machine shop?
They can be installed by a competent engine machine shop with the right tooling/experience. Darton provides install manuals to support correct machining and fitment.

Are Darton MID kits only for import engines?
No—Darton states MID kits are available for many 4, 6, and 8 cylinder import and domestic engines.

Do you stock Darton sleeves or special order them?
We stock a deep selection and can also bring in non-stock items through our direct relationship with Darton. (If you need a specific kit fast, message us with engine + target bore.)

What information do I need before ordering?
Engine code, current bore, desired bore, power/boost target, piston choice, and who is doing the machine work.

I’m running an aluminum block—do I still need fogging oil?
Yes. This is about protecting the bore/crosshatch and valvetrain sealing surfaces during downtime—especially on tight-tolerance, high-dollar builds.