Description

StopTech Drilled Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers that look great behind your wheels – and offer significantly improved braking performance. The unique cross-drilling aids with heat and brake dust dispersal; prevents glazing of the pads; adds bite and improves wet and dry braking performance. Built to last; the black e-coating provides protection from corrosion and the high carbon metallurgy (in most applications) offers quieter operation; better crack resistance and increased performance.

Product Overview

2017 - 2020 BMW 230i, 2018 - 2018 BMW 230i xDrive, 2016 - 2018 BMW 320i xDrive, 2014 - 2016 BMW 328d xDrive, 2016 - 2016 BMW 328i, 2014 - 2016 BMW 328i GT xDrive, 2013 - 2016 BMW 328i xDrive, 2016 - 2018 BMW 330e, 2016 - 2019 BMW 330i, 2017 - 2019 BMW 330i GT xDrive, 2017 - 2019 BMW 330i xDrive, 2012 - 2015 BMW 335i, 2014 - 2016 BMW 335i GT xDrive, 2013 - 2016 BMW 335i xDrive, 2016 - 2018 BMW 340i, 2017 - 2018 BMW 340i GT xDrive, 2016 - 2018 BMW 340i xDrive, 2015 - 2016 BMW 428i, 2015 - 2016 BMW 428i Gran Coupe, 2014 - 2016 BMW 428i xDrive, 2015 - 2016 BMW 428i xDrive Gran Coupe, 2017 - 2020 BMW 430i, 2017 - 2020 BMW 430i Gran Coupe, 2017 - 2020 BMW 430i xDrive, 2017 - 2020 BMW 430i xDrive Gran Coupe, 2014 - 2016 BMW 435i, 2015 - 2016 BMW 435i Gran Coupe, 2014 - 2016 BMW 435i xDrive, 2015 - 2016 BMW 435i xDrive Gran Coupe, 2017 - 2020 BMW 440i, 2017 - 2020 BMW 440i Gran Coupe, 2017 - 2020 BMW 440i xDrive, 2017 - 2020 BMW 440i xDrive Gran Coupe, 2013 - 2015 BMW ActiveHybrid 3

Features and Benefits

• Premium e-coated rotor with advanced metallurgy that greatly reduces pad squeal. Especially effective with higher friction; European style brake pad compounds. Drilled for increased bite; improved looks and better performance
• Drilled/Slotted Helps Evacuate Gasses/Dust/Heat
• Directional Curve Vane Designs On Selected Apps
• Power Alloy Is Descendant Of Patented AeroRotor
• Black E-Coated Non-Friction - Corrosion Protection
• Increased Initial bite and Wet Weather Response
• Superior Resistance To Cracks From Thermal Stress
• Double Disk Ground For Consistent Friction Surface
• Direct OE Replacement

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:	2.953
Description:	StopTech Sport Cross Drilled Brake Rotor; Rear Right
Disc Mounting (cntrc):	Floating / DIH
Disc Mounting [cntrc]:	Floating / DIH
Discard Thickness:	22.400
Hat Finish:	Coated
Misc Holes (cntrc):	1
Misc Holes [cntrc]:	1
Mounting Bolt Hole Circle Diameter:	120.000
Nominal Thickness:	24.000
Outside Diameter:	344.000
Overall Height:	2.606
Part Number:	sto128.34147R
Position:	Rear Right
Rotor Type:	Drilled
Solid Or Vented Type Rotor:	Vented
Stud/Lug Hole Diameter:	0.654
Stud/Lug Hole Quantity:	5
Surface Type:	X Drilled
Title:	StopTech Sport Cross Drilled Brake Rotor; Rear Right
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:	8.700
Weight (cntrc) lbs:	19.150
Weight [cntrc] kgs:	8.700
Weight [cntrc] lbs:	19.150

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
	sto979.34074	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto128.34147L, 1x sto128.34147R, 1x sto309.16090, 1x sto950.34031, 1x sto309.16560, 1x sto950.34032, 1x sto128.34140L, 1x sto128.34140R)
	sto979.34076	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto128.34147L, 1x sto128.34147R, 1x sto309.16090, 1x sto950.34531, 1x sto309.16560, 1x sto950.34032, 1x sto128.34140L, 1x sto128.34140R)
	sto979.34077	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto128.34147L, 1x sto128.34147R, 1x sto309.16090, 1x sto950.34531, 1x sto309.16560, 1x sto950.34032, 1x sto128.34140L, 1x sto128.34140R)
	sto979.34080	Sport Axle Pack Drilled Rotor, 4 Wheel (1x sto128.34147L, 1x sto128.34144L, 1x sto128.34147R, 1x sto128.34144R, 1x sto309.16090, 1x sto950.34531, 1x sto309.16560, 1x sto950.34032)
	sto979.34074R	Sport Axle Pack Drilled Rotor, Rear (1x sto128.34147L, 1x sto128.34147R, 1x sto950.34031, 1x sto309.16560)
	sto979.34076R	Sport Axle Pack Drilled Rotor, Rear (1x sto128.34147L, 1x sto128.34147R, 1x sto950.34531, 1x sto309.16560)

Data: v4.2 - Upd: 2026-10-23 20:13:36

Features

Specifications

Product Attributes - UPC

889590234053

Product Attributes - Brand

StopTech

Product Attributes - Quantity

Sold individually.

Product Attributes - Part Type

Brake Rotors

Product Attributes - Rotor Style

Cross-drilled surface

Product Attributes - Product Line

StopTech Drilled Brake Rotors

Product Attributes - Rotor Finish

Black E-Coat

Product Attributes - Rotor Material

Iron

Product Attributes - Rotor Construction

Vented

Product Attributes - Intended for Street Use

Yes

Product Attributes - Nominal Thickness (in.)

0.945 in.

Product Attributes - Manufacturer's Part Number

128.34147R

Product Attributes - For Use with Stock Calipers

Yes

Product Attributes - Rotor Outside Diameter (in.)

13.54 in.

Compatibility