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RSE Japan
STROKER KIT VR38DETT 4.1 95.50
RSE 4.1L Stroker Kit for Nissan R35 GT-R VR38DETT – 95.5mm
🔧 Planning a larger-displacement engine build for your R35 GT-R?
The RSE 4.1L Stroker Kit (RA201A-NS01A) combines a 95.5mm bore with a 94.40mm crankshaft stroke for a specified displacement of 4057.1cc.
The bore matches the standard dimension listed by the manufacturer, while the crankshaft stroke increases by 6.0mm. Confirm the required engine preparation, machining and supporting components with your engine builder before ordering.
⚙️ Product Specifications
• Brand: RSE — Real Speed Engineering
• Part number: RA201A-NS01A
• Engine: Nissan VR38DETT
• Listed application: Nissan R35 GT-R
• Displacement: 4.1L / 4057.1cc
• Bore: 95.5mm
• Crankshaft stroke: 94.40mm
• Combustion chamber volume: 64.2cc
• Piston crown volume: −10.0cc
• Deck clearance: −0.1mm
• Compression height: 31.20mm
• Connecting rod centre-to-centre length: 165.10mm
• Reference head gasket bore: 96.0mm
📊 Reference Compression Ratios
With a 96.0mm gasket bore, the manufacturer lists:
• 0.8mm gasket thickness → 9.38:1
• 1.0mm gasket thickness → 9.23:1
These figures are for reference. Your engine builder should confirm the actual compression ratio using your engine’s measurements and selected components.
🛠️ Fitment & Installation
Professional engine preparation and assembly are required. A standard-size bore does not mean the kit can be installed without machining or clearance checks.
Before purchasing, confirm compatibility with your specific vehicle and engine, the supplied component list and any additional parts needed.
📩 Need help with your build?
Contact KM Auto Group with your vehicle year, engine details and build plans. Our team can assist with specifications, pricing and current availability.
AUD $10,949
Available on backorder
Q1. What makes RSE exhaust systems high quality?
Please note: Q1 and Q2 below relate to RSE exhaust systems. This product is an engine stroker kit. Please refer to the product description and specifications for details of this kit.
RSE (Real Speed Engineering) exhaust systems are designed and manufactured in Japan with a strong focus on quality, performance and precision engineering.Developed with Japanese performance engineering expertise, RSE products feature:
✅ Premium full titanium construction on selected systems
✅ Lightweight, performance-focused design
✅ Precision TIG welding and high-quality craftsmanship
✅ Optimised exhaust flow and excellent fitment
✅ Distinctive exhaust sound and improved driving experience
✅ Motorsport-inspired engineeringRSE is associated with the same Japanese manufacturing group as TOMEI USA, combining Japanese engineering expertise with performance-focused product development.
Whether you are building a street car or a dedicated track car, RSE offers an excellent balance of quality, performance and value.
Q2. Are RSE exhaust systems suitable for daily driving?
Absolutely! Many RSE exhaust systems are suitable for daily-driven performance vehicles, depending on the model, configuration and local regulations.
RSE exhaust systems are designed to offer:
✅ Improved exhaust flow
✅ Significant weight reduction
✅ Potential improvements in throttle response
✅ Aggressive exhaust sound under acceleration
✅ Lightweight titanium construction on selected modelsMany RSE exhaust systems also include a removable silencer to help reduce exhaust noise when required. However, silencer availability varies by product.
Important: Exhaust sound levels and road legality vary between models. Please check your local state or territory’s roadworthy, noise and emissions requirements before purchasing or installing an aftermarket exhaust system.
Q3. What does "Available on Backorder" mean?
If an RSE product is marked “Available on Backorder”, it means the item is not currently held in our local stock and will need to be ordered from our supplier in Japan.
Before placing your order, we strongly recommend contacting KM Auto Group to confirm:
✅ Current manufacturer availability
✅ Estimated production or restocking time
✅ Estimated shipping and delivery timeframe
✅ Vehicle compatibility and product specificationsImportant Backorder & Special Order Policy
All backorders and special orders are considered final once confirmed and placed with our supplier.
Change-of-mind cancellations, refunds or exchanges are not accepted for confirmed special orders or backorders.
Estimated delivery times are subject to manufacturer availability, production schedules, international shipping and customs clearance.
This policy does not exclude or limit any rights or remedies available under Australian Consumer Law.
Need assistance?
Contact KM Auto Group before ordering. Our team will be happy to assist with product selection, fitment, pricing and availability.
