MBRP Cat Back Dual Rear for Infiniti Q60 3.0L RWD/AWD '17-'19

1. MBRP's Pro Series is the best performance exhaust system for it quality and durability.

2. Design and engineered to fulfil the high requirement in the market and race arena.

3. Constructed from T304 SS for long lasting and real satisfaction. Good resistant to challenging conditions.

4. This is an excellence cat back for Q60 horsepower improvement.

MBRP Cat Back Dual Rear for Infiniti Q60 3.0L RWD/AWD '17-'19

AAM Competition 3 inch True Dual Exhaust for G35

 

AAM Competition 3 inch True Dual Exhaust for G35

1. This is the highest flowing exhaust system for G35, the MaxFlow True Dual. 

2. Specifically designed for demanding volume and velocity flow requirements. The AAM 3” True Dual is a perfect match for turbocharged G35.

3. The AAM 3” MaxFlow True Dual comes with:

- 3” inner diameter flange

- Twin mandrel bent 3” polish T304 SS

- 16 gauges exhaust tube

- 2 nos high flow resonator for deep exhaust note

4. Provide VQ35 engine with maximum reliability due to decreasing of thermal load.

5. Gained a significant 40WHP on test at high horsepower turbocharged G35 vs factory exhaust.

6. This is a great horsepower improvement that comes from superior exhaust built by AAM.

AAM Competition 3 inch True Dual Exhaust for G35

 

Tubi Style Exhaust System Porsche 95B Macan S | GTS | Turbo 14-18

1. Material: AISI 304 SS

2. For Racetrack Use Only

3. Main Pipe Dimension: 55

4. Sound: Tubi Sound

5. End Tips Design: OE

6. Product Finish: Polished

Tubi Style Exhaust System Porsche 95B Macan S | GTS | Turbo 14-18

 

Brian Crower - Stroker Kit - Subaru Ej205-Wrx - 79Mm Stroke Billet Crank, Sportsman Rods, Custom Pistons

1. Incorporated a proven 79mm stroke and steel billet crankshaft. This BC Stroker Kit will bring you to 2.29L displacement with safe 96mm bore.

2. Gives the best performance improvement from CP forged aluminum pistons, premium alloy wrist pins, full ring pack and buttons. 

3. The BC ProH2K rods rated to 600 horsepower and the BC Pro Series rods rated to 800+ horsepower.

4. Kit specification:

• BC 4340 billet steel crankshaft (79mm stroke). 
• BC 4340 ProH2K or Pro Series connecting rods. 
• CP or JE aluminum forged pistons (any bore size, any compression ratio). 
• 5100 Series carbon steel alloy wrist pins. 9310 Series pin upgrade avail. 
• Ductile iron plasma top rings, tapered second ring and low tension oil rings.
• Fully system balanced and ready to install. 

Brian Crower - Stroker Kit - Subaru Ej205-Wrx - 79Mm Stroke Billet Crank, Sportsman Rods, Custom Pistons

HKS HKS Step 1 Stroker Kit 4G63 Evo 8/9 85.5mm Bore 96 Stroke

1. Comparison for Step 1 HKS VS Stock:

- Cylinder Layout : L4 VS L4

- Bore x Stroke: 85.5 x 96 VS 85 x 88

- Total Displacement: 2204.7cc VS 1997.4cc

- Capacity/ Cylinder: 551.2cc VS 499.4cc

- Compression Ratio: 

9.1 t= 1mm/ 9.0 t= 1.2 mm/ 8.7 t= 1.6mm VS 8.8 t= 1.2mm

2. This excellence HKS Stroker Kits inclusive of: 

-Forged aluminum pistons

-Complete sets including piston rings

-Wrist pins

-Retaining clips

-Connecting rods and crankshaft

3. All components are designed to function perfectly to increase the displacement and improve horsepower.

4. Output/ in house Internal Engine Bench: 500 PS @ 7000 RPM. No performance drop.

5. Piston: Molybdenum coated 0.5mm diameter oversize from stock for better initial-fitness and friction reduction.

6. Crankshaft: Newly design lighter HKS crankshaft for better engine response.

7. Connecting rods: Newly design H- Beam connecting rods for 4G63.

8. Other machining: Cylinder Boring and Honing required for 0.5mm oversized pistons. No block clearance modifications necessary for larger stroke crank. 

HKS HKS Step 1 Stroker Kit 4G63 Evo 8/9 85.5mm Bore 96 Stroke

 

HKS GTIII 800 Full Turbine Kit for Nissan R35 GTR

Here are the advantages of the HKS GTIII-800 Full Turbine Kit for the Nissan R35 GT-R, based on its specs & features. 

What it is

The GTIII-800 KIT (Part No. 11003-AN016) is a full twin-turbo turbocharger upgrade for the R35 GT-R (VR38DETT). 

It employs symmetrical twin turbines in the GTIII-RS/GTIII-RSR specification. 

Boost preset is ~88.3 kPa (≈0.9 kgf/cm²) in the shipped kit. 

Key Advantages

1. High Power Potential (~800 ps)
   
• The kit is designed to allow the R35 to reach about 800 ps, provided the engine has supporting modifications (internals etc.).  
• This is a major step up from stock turbo capability, giving much more top-end and high-speed potential.
2. Improved Turbo Response / Linear Power Delivery
   
• Uses light compressor wheels so boosting is more linear and less abrupt. Better responsiveness, particularly across mid-RPMs.  
• Because of the symmetrical layout and revised turbo housings & wheel sizes (smaller turbine & compressor wheels vs some older models), lag can be reduced compared to very large turbos.  
3. Symmetrical Twin Turbo Layout
   
• Helps with balancing airflow and exhaust on both banks of the V-engine (i.e. VR38’s twin banks). This can improve spool times, reduce uneven stress, and promote consistent thermal behaviour.  
4. Durability and Heat Resistance
   
• Comes with a highly durable cast exhaust manifold, heat-resistant materials (cast steel where needed) for exhaust and turbo housing.  
• Stainless steel wastegate returns.  
5. Stable Boost Control
   
• Incorporates twin GTII wastegates to ensure stable boost under varying conditions. This helps avoid boost creep and maintains more predictable power delivery.  
6. Flexibility & Upgradability
   
• The kit is suitable for both lighter tune-ups (replacing stock turbos with minimal supporting mods) and more serious builds (with upgraded engine internals) targeting higher power.  
• Also, there is an upgrade kit version (GTIII-800 Upgrade Kit) for those already on GT800 which can convert to the GTIII-800 spec.  
7. Preset for Off-road / Track Use
   
• The spec comes preset at 0.9 kgf/cm² (≈ 12.8 psi) which is quite substantial; good starting point for track/race use.  
• Note: the kit is “off-road use only” and meant “for use without metal catalyzer,” so it’s suited to non-street legal / track / motorsport applications.  

Potential Considerations (so you can weigh)

While these are advantages, for a full picture, some trade-offs or needs you should know:

• Engine internals likely need upgrading to reliably handle the power (~800 ps) especially if pushing boost. Stock parts may not suffice at that power.  
• Heat management, cooling, fuel system, and tuning are critical to make full use of the kit.
• Installation complexity and cost (manifold, piping, wastegates, etc.).
• Street legality (noise, emissions, catalyzer removal) may be affected.

**The GTIII-800 concept is putting 2 set of new HKS turbines in a symmetrical layout.

**Turbo system with a light compressor wheel will produce a very linear boost suitable for a light turbo upgrade.

**This turbo kit will reach 800 PS with some engine modification/ internal upgrade such as on conrods and pistons.  

**The Kit will inclusive of:
- Highly durable cast exhaust manifold.
- Twin GTII wastegate to ensure stable boost control.
- Wastegate return to stainless steel in consideration of environmental pollution.

HKS GTIII 800 Full Turbine Kit for Nissan R35 GTR

 

Tubi Style Stainless Steel Exhaust Porsche 996 Turbo & Turbo S 01-05

1. Material: AISI 304 SS

2. For Racetrack Use Only

3. Main Pipe Dimension: 60

4. Sound: Tubi Sound

5. Exhaust Valve: No Valve

6. End Tips Design: OE Shape

7. Product Finish: Polished

Tubi Style Stainless Steel Exhaust Porsche 996 Turbo & Turbo S 01-05

 

Invidia 08-11 STi Hatch / 11 WRX Hatch Dual Q300 Titanium Tip Cat-back Exhaust - Auction

1. The Invidia flat bottom shaped muffler design improved high speed aerodynamic performance. 

2. This is a high performance Cat Back exhaust for a great horsepower improvement. 

3. The Advantex material gives an excellent free-flow exhaust with optimized back pressure for greater horsepower, better torque gains and a rich deep sporty sound. 

4. An excellence performance from Invidia Cat Back due to the renowned SUS304 polished stainless steel piping, mandrel bent process and the state of the art CNC machine made flange.

5. The Robot TIG welding and double wall polished stainless steel or Titanium tips added significant quality value to enjoy.

Invidia 08-11 STi Hatch / 11 WRX Hatch Dual Q300 Titanium Tip Cat-back Exhaust - Auction

 

MBRP 2015-2020 Audi S3 T304 Stainless Steel 3 Inch Cat Back Quad Split Rear Exit with Carbon Fiber Tips Active Exhaust

1. The MBRP is a dyno proven Cat Back exhaust system with countless of hours and hundreds miles of testings, be in in house or on roads.

2. Design with fully mandrel bend tubing to minimal bend degree angle to extract gas out faster. 

3. A great horsepower improvement system with direct fit to OEM hangers and bolt on installation only.

4. Gives exceptional style and sound altogether in a perfect package.

5. Specifications:

• 2015-2020 Audi S3 T304 Stainless Steel 3 Inch Cat Back Quad Split Rear Exit with Carbon Fiber Tips Active Exhaust
• 2015-2020 Audi S3
• (4) 4 inch OD Carbon Fiber Tips Included

MBRP 2015-2020 Audi S3 T304 Stainless Steel 3 Inch Cat Back Quad Split Rear Exit with Carbon Fiber Tips Active Exhaust

 

Borla Exhaust - Camaro V6 2014-2015 Cat-Back S-Type

1. Borla Exhaust System that featuring the X-pipe is an exceptional horsepower improvement exhaust system.

2. Built with T-304 SS, this Borla Cat-Back is a patented straight-through and multi-core technology that unleashed the hidden horsepower.

3. This great exhaust system from Borla will increase horsepower, safeguard fuel and will give a distintive Borla sound of power. 

4. Compatible for 2014-2015 Chevrolet Camaro 3.6L V6 Automatic/ Manual Transmission, Rear Wheel Drive 2 doors except RS will dual mode exhaust.

5. Specification:

-Pipe diameter: 2.25”

-Tip size: 3.5”

-Exit: Single Split Rear Exit

Borla Exhaust - Camaro V6 2014-2015 Cat-Back S-Type

 

Tubi Style Stainless Steel Catback Exhaust System Alfa Romeo Giulia Veloce Type 952 2016- 2022

1. Material: AISI 304 SS

2. For Racetrack Use Only

3. Main Pipe Dimension: 65

4. Sound: + Rumore

5. Exhaust Valve: No Valve

5. End Tips Design: OE

Tubi Style Stainless Steel Catback Exhaust System Alfa Romeo Giulia Veloce Type 952 2016- 2022

 

Tubi Style Stainless Steel Mufflers Maserati Quattroporte 05-12

1. Material: AISI 304 SS

2. For Racetrack Use Only

3. Main Pipe Dimension: 63

4. Sound: + Rumore

5. Exhaust Valve: No Valve

5. End Tips Design: Straight Cut

Tubi Style Stainless Steel Mufflers Maserati Quattroporte 05-12

 

MagnaFlow SYS Cat-Back Polished 3in Tips for 15-17 Subaru WRX Sti 2.5L

1. The MagnaFlow Competition Series Exhaust Systems are designed maximum performance enthusiasts.

2. This system will improve horsepower, reduce mass and give an aggressive exhaust note that roar along the street. 

3. This system may not comply with all local or federal noise requirements.

4. Details:

* All Mandrel Bent Tubing
* 409 Stainless Steel Construction
* Increased Horsepower and Torque
* Lifetime Construction Warranty
* Made in USA

MagnaFlow SYS Cat-Back Polished 3in Tips for 15-17 Subaru WRX Sti 2.5L

 

Tubi Style Stainless Steel Exhaust w/Valve Lamborghini Aventador LP700 | LP720

1. Material: AISI 304 SS

2. For Racetrack Use Only

3. Main Pipe Dimension: 70

4. Sound: Tubi Sound

5. End Tips Design: OE

6. Exhaust Valve: Pneumatic

Tubi Style Stainless Steel Exhaust w/Valve Lamborghini Aventador LP700 | LP720

 

Skunk2 Ultra Series Honda/Acura K Series Race Rockers allow stability at above 9000 RPM

The Skunk2 Ultra Series K-Series Race Rockers are among the most hardcore valvetrain upgrades ever made for Honda K20/K24 engines. 

These are not “street comfort” rocker arms — they are engineered for high-RPM naturally aspirated drag, circuit, and serious all-motor builds where valvetrain stability above 9,000 RPM becomes critical.

Technical Philosophy — Why These Exist

Factory Honda K-series rocker systems are brilliant for street use because VTEC allows:

• low-lift cam operation at low RPM
• high-lift cam operation at high RPM
• smooth drivability and fuel economy

But at ultra-high RPM:

• the OEM multi-piece steel rocker assembly becomes heavy
• inertia increases dramatically
• rocker deflection and valve float become major problems
• VTEC pins can become unstable under extreme loads

The Skunk2 Ultra Race Rockers completely eliminate the OEM compromise.

Instead:

• they convert the valvetrain into a single-lobe race setup
• reduce reciprocating valvetrain mass
• improve stability at massive RPM
• allow more aggressive cam acceleration profiles

This is similar to philosophies used in:

• Formula-style valvetrain engineering
• Pro Stock drag engines
• high-end endurance racing engines

Core Engineering Advantages

1. 7075 Aerospace Aluminum Construction

Factory K-series rockers are steel.

Skunk2 uses:

• CNC-machined 7075 aluminum
• heat-treated
• hard anodized

Why 7075 matters

7075 has:

• extremely high tensile strength
• excellent fatigue resistance
• much lighter weight than steel

Result:

• lower inertia
• reduced valve bounce
• less spring surge
• improved RPM ceiling

At 9,000–11,000 RPM, reducing a few grams in valvetrain mass matters enormously.

Think of it like:

• lighter connecting rods
• lighter pistons
• but for the top end.

2. Single-Lobe / Non-VTEC Design

This is the biggest conceptual shift.

OEM K-series:

• uses multiple cam lobes
• rocker pins engage VTEC at higher RPM

Skunk2 Ultra:

• deletes VTEC entirely
• runs one aggressive cam profile all the time

Advantages

• eliminates VTEC pin failure risk
• removes transition instability
• improves valvetrain consistency
• allows more aggressive cam geometry

Disadvantages

• rough idle
• weak low RPM drivability
• poor street comfort
• reduced fuel efficiency

This is why these are mainly:

• drag race
• time attack
• full race builds

NOT daily-driver parts.

3. Ceramic Roller Technology

The roller tip is critical.

Skunk2 uses:

• ceramic roller interface

Why ceramic matters

Ceramic offers:

• extreme hardness
• lower friction
• high heat resistance
• wear resistance

At high RPM:

• rocker-to-cam contact loads become violent
• friction reduction improves reliability
• heat generation drops

This helps:

• cam longevity
• valve control
• high-RPM durability

4. Large Radius Adjuster Pad

High-lift cams create geometry problems.

Aggressive cams can:

• push rocker contact patch dangerously off-center
• increase valve tip stress
• destabilize rocker sweep

Skunk2 enlarges the adjuster radius.

Result

• safer rocker sweep
• better valve tip contact
• supports extreme lift cams
• reduces chance of slipping off valve tip

Especially important with:

• Stage 3/4 cams
• oversized valves
• 10k+ RPM setups

5. Titanium Adjuster Nut

Tiny detail — huge race-engine mentality.

Titanium:

• reduces mass
• resists corrosion
• maintains strength at temperature

Reducing valvetrain weight even slightly helps:

• RPM response
• harmonics
• stability

This shows Skunk2 optimized every gram possible.

The 1.77 Rocker Ratio Advantage

OEM K-series ratio is slightly lower.

Skunk2 uses:

• 1.77 ratio

What this means

Valve lift increases slightly without changing cam lobe lift.

Example:

• same cam lobe
• more valve opening
• more airflow potential

Benefits

• improved cylinder filling
• stronger top-end power
• better high-RPM breathing

BUT:

• increases valve acceleration stress
• requires excellent springs/retainers

This is why proper pairing matters.

Required Supporting Mods

These rockers are NEVER standalone upgrades.

Proper setup usually includes:

• Ultra/Stage 3/4 cams
• dual valve springs
• titanium retainers
• forged bottom end
• upgraded oiling
• standalone ECU/Hondata
• ported head

Without supporting hardware:

• reliability suffers
• gains are limited

Comparison vs OEM Honda K-Series Rockers

Attribute	OEM K-Series Rockers	Skunk2 Ultra Series K-Series Race Rockers
Material	Steel	7075 aluminum
VTEC	Yes	Deleted
Weight	Heavier	Extremely light
RPM capability	~8,500- 9,000	10,000+ capable
Street drivability	Excellent	Poor
Race suitability	Moderate	Extreme
High-lift cam support	Limited	Excellent
Valvetrain stability	Good	Outstanding
Maintenance demand	Low	High
Noise/vibration	Low	Higher

Comparison vs Other Brands

Attribute	Skunk2 Ultra Series K-Series Race Rockers	Drag Cartel	Supertech	OEM Honda
Philosophy	Full race	Hybrid race/street	Reinforced OEM-style	Factory balance
VTEC delete	Yes	Usually no	No	No
RPM focus	Extreme	Very high	High	Moderate
Street comfort	Poor	Better	Good	Excellent
Best use	Drag/time attack	Aggressive NA/turbo	Reliability builds	Daily/performance
Complexity	Very high	High	Moderate	Low

Who Actually Needs These?

These are ideal for:

• 300+ WHP all-motor K builds
• 9,500–11,000 RPM engines
• drag K24/K20 hybrids
• serious circuit builds
• pro-level naturally aspirated setups

Overkill for:

• mild turbo street cars
• bolt-on builds
• daily drivers
• low RPM setups

Final Assessment

The Skunk2 Ultra Race Rockers represent a “race-first” engineering philosophy:

• eliminate compromise
• minimize mass
• maximize RPM stability
• maximize airflow potential

Honda’s OEM VTEC system is genius for balancing:

• drivability
• efficiency
• power

Skunk2’s Ultra Rockers abandon balance entirely in pursuit of:

• peak airflow
• maximum RPM
• uncompromised race performance

That is why these parts are respected in elite K-series NA racing builds.

1. Built from 7075 Aerospace grade aluminum for lighter weight. 

2. Will replace the heavy factory steel rocker arms and eliminate VTEC function making them perfect for drag and road racing.

3. Undergone CNC machined for:

a) Precision fit and finish

b) Heat treated for superior strength

c) Hard anodized to prevent wear and corrosion. 

4. The Skunk2 Rockers also have tool steel roller for strength, a large radius pad on the adjuster to run high lift cams without falling off the tip of the valve.

5. A titanium adjuster nut to save weight.  

6. The Skunk2 Rockers fit for various Honda models:
• Honda Accord (2.4L EX/LX) 2003-2007 
• Honda Civic (2.0L Si) 2006-2011
• Honda CR-V (2.4L EX/LX) 2002-2009
• Honda Element (2.4L EX/LX) 2003-2011 
• Acura RSX (2.0L Type S) 2002-2006
• Acura TSX (2.4L K24A2) 2004-2008

Skunk2 Ultra Series Honda/Acura K Series Race Rockers