STM Tuned Promo Codes and Coupons December 2025

STM Tuned logo

STM Tuned

STMT Tuned is an online fashion retailer specializing in trendy women's clothing and accessories. The brand focuses on contemporary streetwear and casual fashion at accessible price points, targeting young fashion-conscious consumers. They offer worldwide shipping and regularly update their collection with new styles.

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Today's STM Tuned discount codes

TOP PICK
STM Tuned logo

20% off

1114 uses
high

worked about 1 month ago

20% Off Stm Closeout Deals at STM Tuned
STM Tuned logo

10% off

112 uses
high

worked about 1 month ago

10% Off Storewide at STM Tuned
STM Tuned logo

5% off

8 uses
medium

worked 9 months ago

Score 5% off with promo code
STM Tuned logo

5% off

6 uses
medium

worked 9 months ago

Take 5% off with discount code

Featured STM Tuned Products

Manley Crankshaft Forged Race Series for Evo 4-9 & 7-Bolt DSM (190100)

Manley Crankshaft Forged Race Series for Evo 4-9 & 7-Bolt DSM (190100)

Manley Forged Race Series street/strip crankshafts for 4G63 Evo 4-9 and 7-bolt DSM are designed with special teardrop, diagonal oiling features not found on OEM cranks. Uniquely designed and ultra-lightweight, these forged cranks feature fully contoured counterweights resulting in reduced windage and maximum performance.Vehicle Fitment:7-Bolt 4G63/4G641996-2006 Evolution IV V VI VII VIII IX1992.5-1999 Eclipse GST/GSX1992.5-1998 Talon TSi1992.5-1994 Laser RS1992.5-1992 Galant VR4Features:• Premium heat treated forgings• Special teardrop, diagonal oiling features not found on OEM cranks• Better performance at high RPM• Stress relieved & shot peened• Nitrided• 100% MagnafluxedIncludes:(1) Crankshaft Part Number: Stroke: Weight (Pounds): 190100 88mm 33.5 190120 (Discontinued) 100mm 37.5 See more Manley Parts

USD 841.83

Mitsubishi 4G63 Bare Block for Evo 4-9

Mitsubishi 4G63 Bare Block for Evo 4-9

This genuine OEM Mitsubishi factory replacement 4G63 bare cylinder blocks for the Evo 8 and 9 models. This is a bare engine block with no internals. Purchase includes the bare block with two dowel bushings as pictured. Ships to continental USA only. MN137516 engine block is pictured.Shipping Information: • Ships to the lower 48 continental United States ONLY! • Domestic Freight charge is included into the price. Vehicle Fitment: Part Number: Notes: 2003-2005 Evolution VIII (Commonly used to rebuild Evo 4/5/6/7/8) 11000W040P Available in the USA 2006 Evolution IX MIVEC 11000W030P Available, Stock can Vary Previous Part #1050A060 2006 Evolution IX MIVEC 1050A855 Obsolete Includes: (1) Bare 4G63 Block (2) Dowel Bushings (MS471111) Discounts: We are sorry, but discount codes are not available with this product. Notes: Availability is hit and miss, so we try to keep the website updated when these are in the States. See more OEM Mitsubishi Parts

USD 3233.11

STM Evo 4-9 4G63 Short Block

STM Evo 4-9 4G63 Short Block

The STM Built 2.0L Short Block is track and dyno tested to 10,000 RPM and 1000+ HP. This block will come standard with the STM Custom, Gas-Ported Pistons and your choice of aluminum rods or steel rods. You can ship us your GOOD used engine block and crank to be rebuilt or we can build the engine using a brand new OEM Evo 8 or 9 core. If you have an Evo 9, you can use the Evo 8 block with your 9 head, you'll just need a MIVEC Conversion Kit. STM blocks include ACL Tri-Metal Bearings, ARP Main Studs, fully-balanced rotating assembly, magnafluxed crank, 1/2" NPT breather in balance shaft tunnel, OEM stub shaft to delete the balance shaft, o-ringed block with stainless rings and balance shaft bearings flipped for removal of balance shafts. Vehicle Fitment:1996-2006 Evolution IV V VI VII VII IX Build Times:These are built to order. Build time is usually 2-5 weeks. If you're sending in your engine block: • We require a good Evo 8/9 crank (No scoring, cracks or damage of any kind) • We need a good Evo 8/9 engine block (Never cut or over bored) Options:• Steel Rods (Manley Turbo Tuff)• Aluminum Rod (GRP)Features:• STM-Spec Manley 11.5:1 Evo gas ported pistons• O-Ringed block with stainless rings • Choice of GRP Aluminum or Manley Turbo Tuff connecting rods • ACL Tri-Metal Bearings • All necessary machine work including line honing, balancing, magnafluxing and cutting for clearances • ARP Main Studs • Balance Shaft Removal • 1/2" NPT block ports with plugsShipping:Ships to the lower 48 continental United States only. Excludes Hawaii and Alaska. The freight shipping charge is already worked into the price of the short block.Discounts:We are sorry, this product is not available for discounts.Includes:(1) STM Built Shortblock(2) Dowel Pins (MS471111)(1) Balance Shaft Stub (MD098626)(1) Balance Shaft Cap (MD092785)(2) Vibrant 1/2" NPT Plugs (10493) STM Engine Break-In Guidelines See more STM Products

USD 8500.00

Tein EDFC Motor Kit for Nissan R35 GTR (EDK05-12120)

Tein EDFC Motor Kit for Nissan R35 GTR (EDK05-12120)

The EDFC (Electronic Damping Force Controller) makes it possible for the driver to control the damping force at the touch of a button while in the drivers seat. This is accomplished by controlling stepping motors installed on each shock absorber. Because the damping force can be controlled with such ease, the driver can adjust the suspension to suit all road/track conditions. Thus allowing the driver to fully enjoy the driving experience. Vehicle Fitment: 2009-2021 Nissan R35 GT-R 2003-2008 Nissan 350Z 2009-2020 Nissan 370Z 2013-2016 Scion FRS 2013-2020 Subaru BRZ 2017-2020 Toyota 86 2005-2004 Subaru WRX/ STi 1987-1998 Toyota Supra (MK3/ MK4) 1995-1999 2G DSM Mitsubishi Eclipse Notes:Fits other vehicles, please verify fitment for vehicles not listed above prior to purchase. EDFC Control Unit: • Compact 1/4 DIN size • 3 Presets for Quick Adjustments • Separately adjustable for front and rear • Ability to use switch between 16 and 32 way adjustment • Illumination for ease of use at night • Variable Illumination control • Variable Volume control EDFC Motor Kit and Wiring Harness: • Sealed rubber motor cover for improved protection • Decreased stepping motor size for use on more applications • Complete harness with female/ male connectors • Extended wiring harness for ease of installation EDFC Strut Kit: • Uses a stopper bracket to eliminate tangling of EDFC wiring on strut type front suspensions. • Tangling is caused by the strut suspension design which rotates when turning the wheels. Without the Strut kit the EDFC wires will become tangled and may break. See more TEIN Products

USD 165.00

What STM Tuned coupons are available today?

We track so many discount codes. Read about today's STM Tuned coupon statistics.

19
STM Tuned deals available today
2
Active STM Tuned codes
20% off
Biggest discount available
Get the best STM Tuned promo codes and coupons that actually work. Our community of sustainability minded shoppers helps you save by testing and sharing:
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  • Exclusive single-use codes shared by our community (19 active codes).
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Note: Our community tests every STM Tuned promo code and shares results in real-time. Check success rates and shopping tips in the activity feed to find what works best for your purchase.
STM Tuned logo

15% off

1 uses
medium

worked 9 months ago

Take 15% off with discount code
STM Tuned logo

20% off

3 uses
medium

worked 9 months ago

Take 20% off with discount code
STM Tuned logo

5% off

110 uses
low

worked 11 months ago

5% Off Storewide at STM Tuned
STM Tuned logo

10% off

766 uses
low

worked 11 months ago

10% Off Stm 925 Lightweight Battery Kit For Evo at STM Tuned

More STM Tuned Products

NGK Spark Plug Wires 8100 for 2G DSM (ME77)

NGK Spark Plug Wires 8100 for 2G DSM (ME77)

NGK spark plug wires for the 2G DSM Eclipse and Talon turbo models. Includes 4 ignition cables with 7mm blue silicone wires as pictured.Vehicle Fitment:2G DSM1995-1999 Eclipse GST/GSX1995-1998 Talon TSi* These can be used with the 1G DSM/GVR4 if you've moved your coil pack and want the shorter 2G wires.2G DSM ME64 Specs:• Wire Length 1: 13.35"• Wire Length 2: 18.07"• Wire Length 3: 21.22"• Wire Length 4: 23.58"Part Number: RC-ME77Stock Number: 8100More Info:NGK Resistor Spark Plug Wire Sets utilize a construction method known as "variable pitch" wire winding to create resistance to radio frequency interference. They have a lower resistance than conventional carbon core wires, which translates into longer wire life.At the center of each wire is a fiberglass stranded core, made from the same family of materials used in bulletproof vests. This core greatly enhances the overall strength of the wire and gives protection from damage caused by the pulling strains that wires are often subjected to.They feature custom designed terminal boots that provide an exact fit and high quality EPDM and Silicone coverings to resist high temperatures, oil, and chemical damage. Each wire is fitted with a positive locking, corrosion resistant nickel-plated terminal end for a tight fit and maximum resistance to vibration and separation.The wires are numbered to correspond to cylinder numbers and the coil wires are color coded for correct and easy installation. See more NGK Parts

USD 70.21

NGK BR6ES 4922 Standard Spark Plug Spark Plug for DSM

NGK BR6ES 4922 Standard Spark Plug Spark Plug for DSM

NGK BR6ES plugs are the factory replacement DSM plugs. These have a heat range of 6 and typically used for low boost, stock builds. Sold individually. Price is for one plug, please adjust quantity as needed.Vehicle Fitment:1990-1999 Eclipse GST/GSX1990-1998 Talon TSi1990-1994 Laser RS1991-1992 Galant VR4Part Number: BR6ESStock Number: 4922Heat Range: 6Thread Size: 14mmFeatures:• NGK standard plugs are constructed for longer life and optimum performance• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties• Corrugated ribs prevent flashover• Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer• Copper core aids in heat removal• Triple seals prevent leakageShell:Thread Diameter: 14mmThread Pitch: 1.25mmSeat Type: GasketReach: 19mm (3/4")Hex Size: 13/16" (21mm)Terminal Type: Removable NutOverall Height: ISOGap: .035" (0.9mmCenter Electrode:Material: NickelType: StandardSize: 2.5mmProjection: Non-ProjectedGround Electrode:Material: NickelType: StandardQuantity: 1Specifications:Resistor: YesResistor Value: 5k OhmHeat Range: 6Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft. See more NGK Parts

USD 3.50

ETS Super Short Route Intercooler for 2G DSM

ETS Super Short Route Intercooler for 2G DSM

The ETS 2G DSM super short route front mount intercooler (FMIC) is designed to give you the shortest route for custom intercooler piping. Available with a 2.5 or 3 inch inlet and outlet on either side and your choice of core thickness. Includes the intercooler and mounting hardware.Vehicle Fitment:2G DSM1995-1999 Eclipse GST/GSX• Requires custom intercooler piping• Not designed for Talon bumpersFeatures:• 26" x 11" Bar and Plate Core• Hand Ported Inlet and Outlets• Choice of Core Thickness• Silver Finish• No Logo Stencil• Made in the USAShipping Times:Most ETS products are built to order. Please allow 2-6 weeks for fabrication. California residents, please add 1-2 weeks for delivery.Discounts:We are sorry, discount codes are not available with ETS products. See more ETS Products

USD 759.00

Nissan OEM Rear Strut Mount Nut for R35 GTR 370Z Z (08918-3082A)

Nissan OEM Rear Strut Mount Nut for R35 GTR 370Z Z (08918-3082A)

Genuine OEM Nissan factory replacement rear suspension strut mount nuts for R35 GTR, 370Z and Z. 6 nuts are used in total, 3 for each side. Sold individually as needed, price is for one nut. R35 GTR diagram is pictured for reference.Vehicle Fitment:2009+ Nissan R35 GTR2023+ Nissan Z (RZ34)2009+ Nissan 370ZPurchase Includes:(1) Nut Part Numbers: GTR Diagram: 089183082A 08918-3082A Diagram images are for reference and may not represent your exact model.As always, please do additional research with your exact VIN to confirm part numbers. See more OEM Nissan Parts

USD 1.08

STM Tuned logo

10% off

595 uses
low

worked over 1 year ago

10% Off Storewide at STM Tuned
STM Tuned logo

10% off

179 uses
low

worked 12 months ago

10% Off Storewide at STM Tuned
STM Tuned logo

5% off

306 uses
low

worked about 1 year ago

5% Off Storewide at STM Tuned
STM Tuned logo

10% off

69 uses
low

worked about 2 years ago

10% Off Hawk Performance Products at STM Tuned

Sustainability Score

42%
STMT Tuned shows limited transparency regarding their supply chain and manufacturing processes. While they have introduced some recycled materials in their packaging, their overall environmental impact remains concerning. The brand lacks clear policies on labor conditions and animal welfare. Their sustainability commitments appear superficial without substantial evidence of implementation or third-party verification.

About STM Tuned

3.0 (2)

FAQs

Major sales typically occur during Black Friday (November), end-of-season clearances (January and July), and occasional flash sales throughout the year. Sign up for their newsletter to get notified about upcoming sales.

The best deals can be found during Black Friday sales and end-of-season clearances. Additionally, shopping mid-week (Tuesday-Thursday) often gives you better access to new arrivals and full size ranges.

Yes, students can receive a 10% discount on full-priced items with valid student ID verification through Student Beans.

Subscribe to their newsletter for exclusive discount codes, follow their social media accounts for flash sales, and check their website banner for ongoing promotions.

In the past month, STM Tuned has launched 0 new promo coupons for shopper discounts. This indicates that STM Tuned does not provide regular opportunities for customers to save money on their purchases.

On average, STM Tuned provides 3.5 discount coupons each month. Based on historical data, the average time between STM Tuned coupon releases every 9 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking STM Tuned website regularly, subscribing to email newsletters, and following them on social media.

STM Tuned is offering 2 working store-wide codes, however they are also offering 17 additional discount codes with a best discount of 20% off

terra.coupons is the #1 provider of discount codes for your favorite retailers, such as STM Tuned. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest STM Tuned discount codes.

Curated by

Aleksa P.

Aleksa P.

Deal Curator

Last updated December 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

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