Description

StopTech Select Sport Drilled & Slotted Brake Rotors are High Quality drilled and slotted rotors that provide added bite and improved looks for any vehicle. Zinc coating provides improved protection from corrosion extending service life.

Product Overview

Centric Premium Rotors are blank, 1-piece, direct replacement discs for your factory brake system. These "black" rotors feature a special anti-corrosion e-coating that gives them their distinctive look and name, and are manufactured under QS and ISO quality system standards. Centric Premium Rotors are particularly desirable in fleet or emergency vehicle applications when an upgrade to StopTech Sport rotors is not possible. Like many StopTech 1-piece rotors, Centric Premium Rotors offer several key advantages over stock rotors, E-coating, Double Disc Ground, Machined Finishes, Symmetric Vane Castings and Mill Balancing are just some of the processes we use. *E-Coat Finish* Centric premium rotors utilize an electrocoating finish that provides long lasting corrosion protection. E-coating is a superior electro-statically applied finish designed to withstand 400 hours of salt water exposure without rusting. Finishes used by other manufacturers provide only minimal protection from the elements and are generally only effective for the shipping and storage portion of a rotor’s life. The addition of heat and moisture eliminates the effectiveness of many of those finishes resulting in immediate corrosion once installed in the vehicle. *Double Disc Ground Braking Surface* Nearly all Centric premium rotors feature a double disc ground, taper free finish. Double disc grinding ensures parallelism, eliminates run out and provides near perfect disc thickness variation (DTV). Double disc grinding leaves a non-directional finish on the friction surface area for more effective pad-rotor break in. This special finish also provides quieter and smoother stops. *Fully Machined Hats Centric* Premium rotors feature 100 percent fully machined finishes including rotor hats. This extra process provides better rotor balance and creates a cleaner, more finished looking component. *Symmetric Vane Casting* The profile of the rotor's cooling vane affects its ability to dissipate heat. Ideally the vane should have the same thickness at the points where it connects to the inner and outer friction plates. This is accomplished with symmetric vane core castings that provide proper heat transfer and thermal efficiency. This thickness symmetry in the vane promotes the uniform transfer of heat from both friction plates into the cooling vanes. Competitors' vanes are often asymmetrical, which can lead to uneven heat transfer and compromises in performance and cooling.

Features and Benefits

• Non-Directional Finishes. Machined non-friction surfaces. G11 metallurgy. Drilled & Slotted for increased bite; improved looks and better performance; Zinc coated corrosion protection
• Non-Directional Finishes
• Machined Non-Friction Surfaces
• G11H18 Metallurgy
• Widest Application Coverage In The Market

Product Details

ABS Tone Ring Included:	No
Attribute ID (Type):	California Proposition 65
Attribute ID Type:	California Proposition 65
Bearings Included:	No
California Proposition 65 Site (basic):	https://www.p65warnings.ca.gov/
California Proposition 65 Site [basic]:	https://www.p65warnings.ca.gov/
California Proposition 65 Text (basic):	WARNING: Cancer and Reproductive Harm
California Proposition 65 Text [basic]:	WARNING: Cancer and Reproductive Harm
California Proposition 65:	WARNING: Cancer and Reproductive Harm
Center Hole Diameter:	75.000
Description:	StopTech Select Sport Drilled and Slotted Brake Rotor; Rear Left
Disc Mounting (cntrc):	Floating / DIH
Disc Mounting [cntrc]:	Floating / DIH
Discard Thickness:	20.400
Misc Holes (cntrc):	1
Misc Holes [cntrc]:	1
Mounting Bolt Hole Circle Diameter:	120.000
Nominal Drum Diameter:	185.000
Nominal Thickness:	0.862
Outside Diameter:	336.000
Overall Height:	2.646
Part Number:	sto227.34080L
Position:	Rear Left
Rotor Type:	Drilled & Slotted
Solid Or Vented Type Rotor:	Vented
Stud/Lug Hole Diameter:	0.583
Stud/Lug Hole Quantity:	5
Surface Type:	Slotted X Drilled
Title:	StopTech Select Sport Drilled and Slotted Brake Rotor; Rear Left
Vane Style (cntrc):	Straight
Vane Style [cntrc]:	Straight
WARNING CA Proposition 65 Message:	WARNING: Cancer and Reproductive Harm
WARNING CA Proposition 65:	Yes
Weight (cntrc) kgs:	8.270
Weight (cntrc) lbs:	18.200
Weight [cntrc] kgs:	8.270
Weight [cntrc] lbs:	18.200

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	sto928.34510	Select Sport Axle Pack, Drilled & Slotted, Rear (1x sto227.34080L, 1x sto227.34080R, 1x sto305.11700)

Data: v4.2 - Upd: 2026-10-13 20:13:55

Features

Specifications

ABS Tone Ring Included:

No

Attribute ID (Type):

California Proposition 65

Attribute ID Type:

California Proposition 65

Bearings Included:

No

California Proposition 65 Site (basic):

https://www.p65warnings.ca.gov/

California Proposition 65 Site [basic]:

https://www.p65warnings.ca.gov/

California Proposition 65 Text (basic):

WARNING: Cancer and Reproductive Harm

California Proposition 65 Text [basic]:

WARNING: Cancer and Reproductive Harm

California Proposition 65:

WARNING: Cancer and Reproductive Harm

Center Hole Diameter:

75.000

Description:

StopTech Select Sport Drilled and Slotted Brake Rotor; Rear Left

Disc Mounting (cntrc):

Floating / DIH

Disc Mounting [cntrc]:

Floating / DIH

Discard Thickness:

20.400

Misc Holes (cntrc):

1

Misc Holes [cntrc]:

1

Mounting Bolt Hole Circle Diameter:

120.000

Nominal Drum Diameter:

185.000

Nominal Thickness:

0.862

Outside Diameter:

336.000

Overall Height:

2.646

Part Number:

sto227.34080L

Position:

Rear Left

Rotor Type:

Drilled & Slotted

Solid Or Vented Type Rotor:

Vented

Stud/Lug Hole Diameter:

0.583

Stud/Lug Hole Quantity:

5

Surface Type:

Slotted X Drilled

Title:

StopTech Select Sport Drilled and Slotted Brake Rotor; Rear Left

Vane Style (cntrc):

Straight

Vane Style [cntrc]:

Straight

WARNING CA Proposition 65 Message:

WARNING: Cancer and Reproductive Harm

WARNING CA Proposition 65:

Yes

Weight (cntrc) kgs:

8.270

Weight (cntrc) lbs:

18.200

Weight [cntrc] kgs:

8.270

Weight [cntrc] lbs:

18.200

Compatibility