My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Wiseco RCS40050 Tapered Piston Ring Compressor Sleeve 4.000 in. Bore

Part of: Wiseco Pistons Tapered Ring Compressor Sleeve

Other options in this family: Wiseco Pistons RCS07000 Wiseco Pistons RCS07700 Wiseco Pistons RCS09600 Wiseco Pistons RCS09250 Wiseco Pistons RCS09400

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

RCS40050
16 reviews
Sale Price

$35.99

Estimated ship date Saturday, November 28

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Wiseco RCS40050 is a precision-machined tapered piston ring compressor sleeve designed for a 4.000 in. (101.60mm) bore. Built to the same exacting standards as Wiseco's forged pistons, this tool makes piston installation faster, safer, and more reliable — whether you're a professional engine builder or a serious DIY enthusiast.

Key Features:

  • Bore Size: 4.000 in. / 101.60mm
  • Material: CNC-machined aluminum, forged from Wiseco sleeve stock for maximum toughness
  • Finish: Hard anodized (black) and PTFE (Teflon) coated for low friction and long service life
  • Tapered Design: Smooth radius tapers down to the specific bore size, compressing rings evenly and gently as the piston is pushed through
  • Bore-Specific Fit: Engineered for a single bore diameter, ensuring precise, consistent ring compression every time
  • Universal Piston Compatibility: Works with pistons from any manufacturer that match the bore size
  • Engraved Bore Size: Bore dimension engraved prominently on the sleeve for easy shop identification
  • Sold individually — one sleeve per package

Traditional band-clamp ring compressors can pinch, bend, or break thin high-performance piston rings during installation. The Wiseco tapered sleeve design eliminates this risk by guiding rings smoothly and evenly into the bore, reducing installation effort and protecting your investment in premium pistons. This piston ring compressor sleeve is an essential tool for any performance engine rebuild.

Products specifications

Bore

4.005"

Tapered

Yes

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Adjustable

No

Industry

Automotive

Engine Type

ICE

Out of Stock Message

Estimated Shipped Date 3-4 Weeks

Product Type

Engine Piston Ring Compressor

Hard Anodized

Yes

Teflon Coated

Yes

Title

Ring Compressor Sleeve - 4.005

Title - Web

Ring Compressor Sleeve - 4.005 in.

great findings

Product as described. No issues.

N/a

So Far So Good!

Worked well - order sent to my dealer

Fast shipping, good price, good products. A++

Great fast shipping.

Shipped fast, received fast, only complaint is package in envelope was crushed but it did not effect the part.

Great price, good e-mail communication and fast shipping. Positive experience with Autoplicity so far.

Lowest price on the Internet, lightning fast shipping! Check Autoplicity before you go anywhere else.

So far so good

Was a whole lot faster and easier than other websites. Also a whole lot cheaper!! Good job

I ordered arp head studs and it took 2 days to ship out but price was the best out for sure.

Nice Store. Best price on the product I was looking for. Received my item within a week. But online order status wasn't updated until the day I received the item. I was ready to call the store to find out if something is wrong with my order. This part could be improved. Otherwise I'm happy and definitely be back in the future.

Autoplicity had the lowest listing price for a part which I had done extensive research. To make the deal much sweeter, free shipping! On top of that, part was delivered in only a few days! Really, there was no reason NOT to order from them. Great prices and fast response are the reasons why I look forward to continued business with Autoplicity. Overall a positive experience, so I highly recommend.

Cheapest around, excellent shipping, easy to use website! ill be back!!!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy