HARDmotion
HARDmotion K-Series Performance Slave Cylinder
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- SKU:
- HM-K-SLAVE
- MPN:
- HM-K-SLAVE
- Shipping:
- Calculated at Checkout
Description
Finish the hydraulic side of your shift.

HARDmotion HD Slave Cylinder | K-Series. The HARDmotion HD slave cylinder removes the internal delay-valve arrangement described in the factory system. It is a focused component for a K-series clutch-hydraulic refresh, especially when you are already addressing the master cylinder and line.
Why it belongs on the build
- Heavy-duty slave cylinder without an internal clutch delay valve.
- Pairs with a compatible CMC and stainless line.
- Applications include the Civic Si and RSX models listed below.
Before you order
Confirm fitting orientation and vehicle compatibility. Adjust and bleed the system correctly; clutch or gearbox wear can still cause shifting problems independently of the hydraulics.
Plan the rest of the setup
Related parts are sold separately. Confirm fitment and option compatibility for your build.
Want a second set of eyes on the setup? Ask HARDmotion with your year, model, trim and current modifications. Shipping information · Returns and warranties
The HARDmotion K-Series Performance HD Slave Cylinder
Improve shifts, faster shifts and reduce 2nd gear grind and lockout issues. This high performance "Heavy Duty" slave cylinder features no clutch delay valves and upgraded internals to provide the proper shifting during fast high rpm shifting.
We recommend pairing this with our em1 CMC and stainless line if you dont already have it to complete your system and have a fresh new part thats built to perform and last. This is superior to removing an oem clutch delay valve due to using fresh new unworn parts and the upgraded internals that are built to not have a delay valve what so ever. This unit is faster, better and more reliable than any slave unit we have tested in our race vehicles. Perfect for the street or track, this slave unit not only solves shifting issues, it is a performance upgrade!
"Guaranteed to work or your money back, simple as that. If this product doesnt fix your problems, or doesnt last we will replace it for free! 100% satisfaction!" -- HARDmotion Team
Fitment:
06-11 Civic Si
12-15 Civic Si
02-06 RSX
Warranty: 1 Year
FREE SHIPPING USA 48 STATES
Featured reviews
from reviews9 Reviews
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Hardmotion Slave...
Made my car shift so much better and i can shift a lot quicker!
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Solid Shifts, Solid...
It is a night and day difference in how my car shifts now. No more delay, no more grinding into second gear. The clutch feels very responsive compared to the old factory slave cylinder. Excellent product and company!
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Great parts!!
Super parts and prices! Excellent customer service!!
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Slave cylinder
Impressed with the design and build quality, probably how it should have been from Honda. Recently installed a Stg 2 clutch and literally exploded an oe replacement Slave Cylinder in one 1/4 mile pass. This HARDmotion slave has made several improvements from pedal feel to shifting smoothness. This is simply one of those Needed parts in a performance build.
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Game changer!!!!
I replaced mine because it started to leak. I put the new Hardmotion slave cylinder in and WOW!!! What a huge difference! Bang 2nd gear with no fear now lol. Stiffer feel on the clutch pedal and just shifts better. Now to move on to replacing the shifter bushings on transmission and under shifter base. Thanks guys!!
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Great Product
The product works great and the installation was simple. I'm very happy with the quality and customer service as well. Highly recommended to anyone wanting to do a CDV delete without the hassle or just replace their old/worn OEM slave.
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Must have, best slave.
This is the best one by far, tried them all. Now my car actually shifts properly.
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My K-Tuned failed...
My K-Tuned unit failed, got another and it failed. So HARDmotion told us about their unit...installed, everything is better and after 6 months still working perfect. They stand by their products and were the ones who told me all about this being the problem for shifts. Def suggest grabbing their em1 cmc as well!
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The best.
Solved my shifting problems. Combined this with the hardmotion cmc and stainless line. Best mod!