Stoptech
Stoptech Anti Knock-Back Spring for 26-36mm Pistons (Sold Individually) - 4lbs of Force
sto42.200.1007
A$7.49
Description
Exclusive Stoptech flash sale discount at StreetFX!
Talk about timing! This is a limited offer while stocks last on various Stoptech part numbers. There's never been a better time to buy your Stoptech upgrades, so what are you waiting for?!
This item is currently on sale!
Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.
StopTech 9/07-09 BMW 328 Slotted & Drilled Left Front Rotor
StopTech Drilled and Slotted 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 and slotting 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.
Additional Information
Premium rotor with advanced metallurgy that greatly reduces pad squeal. Especially effective with higher friction; European style brake pad compounds. Drilled & Slotted for increased bite; improved looks and better performance
Application Summary
2014 - 2015 BMW 220i, 2014 - 2016 BMW 228i, 2015 - 2016 BMW 228i xDrive, 2017 - 2020 BMW 230i, 2017 - 2018 BMW 230i xDrive, 2013 - 2018 BMW 320i, 2013 - 2018 BMW 320i xDrive, 2006 - 2011 BMW 323i, 2011 - 2011 BMW 325i, 2014 - 2018 BMW 328d, 2014 - 2018 BMW 328d xDrive, 2007 - 2016 BMW 328i, 2014 - 2016 BMW 328i GT xDrive, 2009 - 2016 BMW 328i xDrive, 2008 - 2008 BMW 328xi, 2016 - 2019 BMW 330i, 2017 - 2019 BMW 330i GT xDrive, 2017 - 2019 BMW 330i xDrive, 2014 - 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, 2010 - 2015 BMW X1
Product Overview
StopTech recognizes that great brakes need to look as good as they perform. Performance wheels and tires are best complemented with StopTech SportStop Cross-Drilled & Slotted rotors.
SportStop Drilled & Slotted brake rotors prevent glazing of the pads, add bite and improve wet and dry braking performance.
Every SportStop Drilled & Slotted brake rotor is produced from a high quality Centric Parts blank casting and finished in a durable e-coating for corrosion resistance.
SportStop Drilled & Slotted rotors look great behind custom wheels, improve the initial bite of the brake pads, and help wipe away the debris that forms between the pad and the disc. A set of SportStop cross-Drilled & Slotted rear replacement rotors is a great way to match the aesthetics of a StopTech Big Brake Kit with the cross-Drilled & Slotted rotor option.
*E-Coated Finish*
Every SportStop rotor is finished with black e-coating on both sides of the hat, inside the the cooling vanes, and on the outside edge. E-coating is a superior electro-statically applied finish designed to withstand 400 hours of salt water exposure without rusting. This is especially important on both mounting faces of the hat where it touches the hub flange and back face of the wheel. Any accumulation of rust in these area can lead to installed lateral run out issues.
*Power Alloy Metallurgy*
Power Alloy metallurgy is exclusive feature of SportStop rotors. In specific vehicle applications, StopTech works with foundry partners to increase the molybdenum or carbon content of the castings, and to carefully control the cooling rate during production to reach targets for hardness and tensile strength.
*Cooling Vane Design*
Nearly all SportStop Cross-Drilled & Slotted rotors have unique Drilled & Slotted hole patterns for the left and right sides of the vehicle. For these directional patterns, straight vane or pillar vane rotors are used to ensure that a Drilled & Slotted hole never touches a cooling vane.
| Additional Application Notes | |
|---|---|
| • Position: Front Left; 312mm Front Disc Base Brakes 312mm Front Disc | |
| • Position: Front Left; 312mm Front Disc Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Base Brakes 312mm Front Disc | |
| • Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Position: Front Left | |
| • Position: Front Left Drilled And Slotted | |
| • Position: Front Left; exc M Sport Brakes exc M Sport Brakes | |
| • Single Piston Front Calipers Position: Front Left; exc M Sport Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Calipers 312mm Front Disc | |
| • Single Piston Front Calipers Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Calipers 312mm Front Disc | |
| • Position: Front Left; 312mm Front Disc 312mm Front Disc | |
| • Position: Front Left; 312mm Front Disc Base Package 312mm Front Disc | |
| • Single Piston Front Caliper Position: Front Left; 312mm Front Disc Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Caliper 312mm Front Disc | |
| • Drilled And Slotted | |
| • Position: Front Left; F30 Chassis; Sedan; exc M Package Position: Front Left; E93 Chassis; Position: Front Left; E92 Chassis; Position: Front Left; E91 Chassis; exc M Pkg Base Brakes 312mm Front Disc | |
| • Position: Front Left; F30 Chassis; Sedan; exc M Package Position: Front Left; E93 Chassis; Position: Front Left; E92 Chassis; Position: Front Left; E91 Chassis; exc M Pkg | |
| • Drilled And Slotted 312mm Front Disc~Base Brakes | |
| • Position: Front Left; F30 Chassis; Sedan; exc M Package Position: Front Left; E93 Chassis; Position: Front Left; E92 Chassis; Position: Front Left; E91 Chassis; Base Brakes 312mm Front Disc | |
| • Position: Front Left; F30 Chassis; Sedan; exc M Package Position: Front Left; E93 Chassis; Position: Front Left; E92 Chassis; Position: Front Left; E91 Chassis; | |
| • Position: Front Left; Base Brakes Base Brakes | |
| • Position: Front Left; Base Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Caliper | |
| • Drilled And Slotted 312mm Front Disc~Base Brakes~Single Piston Front Caliper | |
| • Single Piston Front Caliper Position: Front Left; Base Brakes Base Brakes 312mm Front Disc | |
| • Position: Front Left; Convertible; 312mm Front Disc Drilled And Slotted 312mm Front Disc | |
| • Drilled And Slotted 312mm Front Disc | |
| • Position: Front Left; F30 Chassis; Sedan; M Sport Package (P337A) Position: Front Left; Base Brakes Drilled And Slotted 312mm Front Disc~Base Brakes~Single Piston Front Caliper | |
| • Position: Front Left; F30 Chassis; Sedan; M Sport Package (P337A) Position: Front Left; Base Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Caliper | |
| • Single Piston Front Caliper Position: Front Left; F30 Chassis; Sedan; M Sport Package (P337A) Position: Front Left; Base Brakes Base Brakes 312mm Front Disc | |
| • Single Piston Front & Rear Caliper Position: Front Left; F30 Chassis; Sedan; M Sport Package (P337A) Position: Front Left; Base Brakes M Sport Package (P337A) | |
| • Position: Front Left; F30 Chassis; Sedan; M Sport Package (P337A) Position: Front Left; Base Brakes Base Brakes | |
| • Single Piston Front Caliper Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Caliper 312mm Front Disc | |
| • Position: Front Left; exc M Sport Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Position: Front Left; exc M Sport Brakes Exc M Sport Package exc M Sport Brakes | |
| • F Series Base Brakes 312mm Front Disc | |
| • exc M Sport Brakes Exc M Performance Brakes | |
| • F Series Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Position: Front Left; Base Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Position: Front Left; Convertible; Base Brakes iX Base Brakes | |
| • Position: Front Left; Convertible; Base Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes 312mm Front Disc | |
| • Position: Front Left; Convertible; Base Brakes iX Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes | |
| • Position: Front Left; Exc M Brakes Exc M Package Exc M Brakes | |
| • Single Piston Front Calipers Position: Front Left; Exc M Brakes Drilled And Slotted Base Brakes 312mm Front Disc~Base Brakes~Single Piston Front Calipers 312mm Front Disc | |
| • Position: Front Left; sDrive 18d Position: Front Left | |
| • Position: Front Left; sDrive 18d Position: Front Left Drilled And Slotted | |
| • Drilled And Slotted 312mm Front Disc~sDrive 18d; sDrive 20d; xDrive 18d; xDrive 20d | |
| • Position: Front Left; sDrive 18d | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
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 |
|---|---|---|
 |
sto935.34112 | Street Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34150L, 1x sto127.34150R, 1x sto308.15610, 1x sto127.34108L, 1x sto127.34108R, 1x sto308.16130) |
 |
sto978.34063 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto950.34013, 1x sto950.34525, 1x sto127.34108L, 1x sto127.34108R, 1x sto127.34091L, 1x sto127.34091R, 1x sto309.12600, 1x sto309.12670) |
 |
sto935.34012 | Street Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34108L, 1x sto127.34108R, 1x sto127.34091L, 1x sto127.34091R, 1x sto308.12670, 1x sto308.12600) |
|
sto935.34047 | Street Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34108L, 1x sto127.34108R, 1x sto127.34078L, 1x sto127.34078R, 1x sto308.12670, 1x sto308.12600) |
 |
sto935.34116 | Street Axle Pack, Drilled & Slotted, 4 Wheel (1x sto308.15610, 1x sto127.34108L, 1x sto127.34108R, 1x sto308.16130, 1x sto127.34141L, 1x sto127.34141R) |
|
sto938.34012 | Street Axle Pack Drilled & Slotted, Front (1x sto127.34108L, 1x sto127.34108R, 1x sto308.12600) |
|
sto938.34065 | Street Axle Pack Drilled & Slotted, Front (1x sto308.15610, 1x sto127.34108L, 1x sto127.34108R) |
|
sto978.34021 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto950.34013, 1x sto950.34525, 1x sto127.34108L, 1x sto127.34108R, 1x sto127.34078L, 1x sto127.34078R, 1x sto309.12600, 1x sto309.12670) |
|
sto978.34064 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto950.34525, 1x sto127.34108L, 1x sto127.34108R, 1x sto127.34091L, 1x sto127.34091R, 1x sto309.12600, 1x sto309.12670, 1x sto950.34032) |
|
sto978.34066 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34108L, 1x sto127.34108R, 1x sto127.34078L, 1x sto127.34078R, 1x sto309.12600, 1x sto309.12670, 1x sto950.34531, 1x sto950.34032) |
|
sto978.34067 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34108L, 1x sto127.34108R, 1x sto127.34091L, 1x sto127.34091R, 1x sto309.12600, 1x sto309.12670, 1x sto950.34531, 1x sto950.34032) |
 |
sto978.34068 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34150L, 1x sto127.34150R, 1x sto127.34108L, 1x sto127.34108R, 1x sto309.16130, 1x sto950.34531, 1x sto950.34032, 1x sto309.15610) |
|
sto978.34070 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34150L, 1x sto127.34150R, 1x sto127.34108L, 1x sto127.34108R, 1x sto309.16130, 1x sto950.34531, 1x sto950.34032, 1x sto309.15610) |
|
sto978.34071 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34108L, 1x sto127.34108R, 1x sto309.16130, 1x sto950.34531, 1x sto950.34032, 1x sto309.15610, 1x sto127.34141L, 1x sto127.34141R) |
|
sto978.34021F | Sport Axle Pack, Drilled & Slotted, Front (1x sto950.34013, 1x sto127.34108L, 1x sto127.34108R, 1x sto309.12600) |
|
sto978.34022F | Sport Axle Pack, Drilled & Slotted, Front (1x sto127.34108L, 1x sto127.34108R, 1x sto950.34032, 1x sto309.15610) |
|
sto978.34064F | Sport Axle Pack, Drilled & Slotted, Front (1x sto127.34108L, 1x sto127.34108R, 1x sto309.12600, 1x sto950.34032) |
|
sto978.34065F | Sport Axle Pack, Drilled & Slotted, Front (1x sto127.34108L, 1x sto127.34108R, 1x sto950.34032, 1x sto309.15610) |
|
sto978.34062 | Sport Axle Pack, Drilled & Slotted, 4 Wheel (1x sto127.34150L, 1x sto127.34150R, 1x sto127.34108L, 1x sto127.34108R, 1x sto309.16130, 1x sto950.34031, 1x sto950.34032, 1x sto309.15610) |
Features
- Black E-Coated Non-Friction - Corrosion Protection
- Direct OE Replacement
- Directional Curve Vane Designs On Selected Apps
- Double Disk Ground For Consistent Friction Surface
- Drilled/Slotted Helps Evacuate Gasses/Dust/Heat
- Increased Initial bite and Wet Weather Response
- Power Alloy Is Descendant Of Patented AeroRotor
- Superior Resistance To Cracks From Thermal Stress
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
(keyword: rotor)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| ABS Tone Ring Included: | No |
| Bearings Included: | No |
| Center Hole Diameter: | 3.110 |
| Description: | StopTech Sport Drilled/Slotted Brake Rotor; Front Left |
| Disc Mounting (cntrc): | Floating |
| Disc Mounting [cntrc]: | Floating |
| Discard Thickness: | 0.882 |
| Hat Finish: | Coated |
| Misc Holes (cntrc): | 1 |
| Misc Holes [cntrc]: | 1 |
| Mounting Bolt Hole Circle Diameter: | 4.724 |
| Nominal Thickness: | 23.800 |
| Outside Diameter: | 312.000 |
| Overall Height: | 73.600 |
| Part Number: | sto127.34108L |
| Position: | Front Left |
| Rotor Type: | Drilled & Slotted |
| Solid Or Vented Type Rotor: | Vented |
| Stud/Lug Hole Diameter: | 14.500 |
| Stud/Lug Hole Quantity: | 5 |
| Surface Type: | Slotted X Drilled |
| Title: | StopTech Sport Drilled & Slotted Brake Rotor; Front Left |
| Vane Style (cntrc): | Straight |
| Vane Style [cntrc]: | Straight |
| Weight (cntrc) kgs: | 8.840 |
| Weight (cntrc) lbs: | 19.450 |
| Weight [cntrc] kgs: | 8.840 |
| Weight [cntrc] lbs: | 19.450 |
Product Downloads
| # | Document Type | Download |
|---|---|---|
| 1. | Technical Bulletin |
|
Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Stoptech, CENTRIC BRAKE PARTS, Centric Parts |
| StreetFX SKU | sto127.34108L |
| SFX Item ID | 4452027 |
| Accounting SKU | sto-127.34108L |
| Manufacturer SKU | 127.34108L |
| Manufacturer UPC | 805890767848 |
| Alternative References | SPH-127-34108L |
Brake Rotor, Cross Drilled, Slotted, Cast Iron, Black E-Coat, Driver Side Front, BMW, Each
StopTech drilled and slotted brake rotors are engineered to look good and perform at the same time! These StopTech rotors perfectly balance the benefits of both drilled and slotted-style rotors to deliver lightweight performance, smooth braking, and shorter stopping distances--even on wet roads. And, of course, they look awesome behind your open wheels! These rotors are manufactured from high-quality blank castings, CNC-machined, and then most are finished with a black E-coating to hold on to their performance and remain great looking. They fit like stock but their performance and appeal goes miles beyond. StopTech drilled and slotted brake rotors--cooler control for your ride!
| Product Attributes | |
|---|---|
| UPC | 805890767848 |
| Brand | StopTech |
| Quantity | Sold individually. |
| Part Type | Brake Rotors |
| Rotor Style | Cross-drilled and slotted surface |
| Product Line | StopTech Drilled and Slotted Brake Rotors |
| Rotor Finish | Black E-Coat |
| Rotor Material | Iron |
| Rotor Construction | Vented |
| Intended for Street Use | Yes |
| Nominal Thickness (in.) | 0.937 in. |
| Manufacturer's Part Number | 127.34108L |
| For Use with Stock Calipers | Yes |
| Rotor Outside Diameter (in.) | 12.28 in. |
Compatibility
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