Custom ECU tuning for Kia, Genesis and the Hyundai N platformWritten for your car · Refined from your logs · Revisions included
Lambda Raceworks

Lambda Raceworks 4.1 Race Engine

New Item
From$20,999.95
Drivetrain *
Core exchange *
Installation *
Will you need the car transported to Texas? *
  • Fast shipping
  • Expert support
  • Built for performance
The 4.1 Lambda race engine

This is the new era for 3.3 racing and development. This crate engine comes with everything needed to reliably drag, circuit race your high powered Lambda. Closed deck, block inserts, ARP headstuds, high performance piston rings, forged Pistons and lowered compression. ARP crankshaft main bolts. And best of all warrantied for 12 month/30,000 miles. Engines are built to order with a turnaround of 6-10 weeks. Those on the SleepyTuned racing and development membership unlimited 2 year unlimited mileage

Production time

The engine is built to order with a turn around of 6-10 weeks delivery depending on order load and payment completion if making installmaents.

Additional features

Heads are ported to enhance flow. All new internal components.

No Refund or Cancellation Policy

4.1 Lambda Race Engine Program

Due to the highly specialized nature of motorsports components and the custom built process involved, all purchases of the 4.1 Lambda Race Engine are final.

Custom Built Product

Each engine is assembled to order using customer-selected specifications, performance targets, and application requirements. Production begins immediately after order confirmation and allocation of parts, machining time, and build resources.

No Cancellations

Orders cannot be cancelled once payment has been processed. Build scheduling, parts procurement, and machine work are initiated immediately, and costs are incurred at the start of the project.

No Refunds

All sales are non-refundable. This includes, but is not limited to:

  • Deposits

  • Partial payments

  • Paid-in-full orders

  • Shipping charges

  • Taxes and processing fees

No Returns

Race engines are high performance competition components that:

  • Are built for a specific customer and application

  • Cannot be restocked or resold as new

For these reasons, returns are not accepted under any circumstances.

Performance Use Disclaimer

This product is intended for off-road and competition use only. High-performance racing components operate under extreme conditions and carry inherent mechanical risk. By purchasing, the customer acknowledges and accepts these risks.

Customer Responsibility

The customer is responsible for:

Ensuring proper installation by a qualified professional

Following all recommended break-in and maintenance procedures

Improper installation, tuning, fueling, cooling, lubrication, or misuse voids any applicable warranty coverage.

Agreement

Completion of purchase constitutes full agreement to this policy and all related terms and conditions.

All sales are final. No refunds. No cancellations. No returns.