In stock

Hastings Piston Rings — 3.875" Standard — 95" Big Bore Twin Cam

Hastings · #DS-750874 · Top End / Engine

Includes top compression rings, second compression rings, and oil control rings
Top Compression Rings are Barrel Face
Helps in the the heat transfer process between the piston and cylinder wall
Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
Second Compression Ring are Reverse Torsional Taper Face

$92.40

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

Shop all Hastings
Everything we carry from Hastings →

Description & features14 features

For KB pistons only, not for OEM pistons.

Only enough rings for one piston.

Includes top compression rings, second compression rings, and oil control rings
Top Compression Rings are Barrel Face
Helps in the the heat transfer process between the piston and cylinder wall
Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
Second Compression Ring are Reverse Torsional Taper Face
Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
Oil Control Rings are Three Piece Flex Vent
Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
Provides uniform pressure through four steel rails and two expanders assuring positive oil control
Made in the USA
Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Includes enough rings for two pistons (unless noted).
Two rings per groove, except for the rails that will be two rail rings per one expander ring.

Specifications9 specs

Bore - Oversize: Standard
Style: Performance Replacement
Bore Size: 3.875"
Units: Set
Riding Style: Street
Ring Material: Moly Coated
Shipping weight: 0.2 lb
Package size: 5.4 × 5.2 × 1.7 in
Country of origin: USA

Fitment51 models · Harley-Davidson

Harley-Davidson51 models

15th Anniversary Fat Boy FLSTF2005
Electra Glide Ultra Classic FLHTCU1999
FLHR Road King1999–2006
FLHRCI Road King Classic1999–2006
FLHRI Road King2000–2006
FLHRS Road King Custom2004–2006
FLHRSI Road King Custom2004–2006
FLHT Electra Glide Standard1999–2006
FLHTC Electra Glide Classic1999–2006
FLHTCI Electra Glide Classic1999–2006
FLHTCUI Electra Glide Ultra Classic1999–2006
FLHTI Electra Glide Standard2003–2006
FLHX Street Glide2006
FLHXI Street Glide2006
FLST Heritage Softail2006
FLSTC Heritage Softail Classic2000–2006
FLSTCI Heritage Softail Classic2001–2006
FLSTF Fat Boy2000–2006
FLSTFI Fat Boy2002–2006
FLSTI Heritage Softail2006
FLSTN Softail Deluxe2005–2006
FLSTNI Softail Deluxe2005–2006
FLSTS Heritage Springer2000–2003
FLSTSC Softail Springer Classic2005–2006
FLSTSCI Softail Springer Classic2005–2006
FLSTSI Heritage Springer2001–2003
FLTR Road Glide1999–2002
FLTRI Road Glide1999–2006
FXD Dyna Super Glide1999–2005
FXDB Street Bob2006
FXDC Super Glide Custom2005
FXDCI Super Glide Custom2005–2006
FXDI Dyna Super Glide2004–2006
FXDI35 Dyna 35th Anniversary Super Glide2006
FXDL Dyna Low Rider1999–2005
FXDLI Dyna Low Rider2004–2006
FXDS-Conv Dyna Convertible1999–2000
FXDWG Dyna Wide Glide1999–2005
FXDWGI Dyna Wide Glide2004–2006
FXDX Dyna Super Glide Sport1999–2005
FXDXI Dyna Super Glide Sport2004–2005
FXDXT Dyna Super Glide T-Sport2001–2003
FXST Softail Standard2000–2006
FXSTB Night Train2000–2006
FXSTBI Night Train2001–2006
FXSTD Softail Deuce2000–2006
FXSTDI Softail Deuce2001–2006
FXSTI Softail Standard2001–2006
FXSTS Springer Softail2000–2006
FXSTSI Springer Softail2001–2006
Road King EFI FLHR1999

Fitment comes from the catalog data for this part. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbers

Salto part #: DS-750874
Hastings part #: 2M4985
UPC: 075538246275

Shipping

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

Questions4 answers

Is it in stock?: Yes — it’s in stock right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: It’s listed for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine Hastings?: Yes. It’s new and genuine, straight from Salto — Hastings part #2M4985.