RK Autowerks McLaren M840T Engine Rebuild Configurator

$24,999.95

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Our engine builds follow a straightforward process. Start by building your configuration below. Once your deposit is placed, we’ll send a DocuSign agreement with terms, shipping instructions, and wire transfer details.

If you’re sending your engine core, we’ll coordinate round-trip freight (U.S. only). If you’re sending your vehicle, transport must be arranged on your end. A core report will be provided before final payment. All communication is handled by email.

Chassis
Installation and Shipping Option

Vehicle transport is customer’s responsibility.

Stock or Forged Engine
Displacement Upgrade
Core Deposit
Performance add ons
Core process aknowledgement
Pay a deposit of $5,000.00 per item

Description

This is our complete engine rebuild solution for the McLaren platform — powering the McLaren 720S/765LT/750S/Senna/GT Platforms.
Each build begins with a $5,000 deposit, with the remaining balance due via certified funds. Engines are fully disassembled, cleaned, and inspected. Rods and pistons are clearance-checked, oil pumps are rebuilt, and all wear items are replaced with new  OE gaskets, seals, and bolts. RK-spec rod and main bearings are standard on all builds. For high-horsepower applications, forged upgrades are available — including Carrillo rods/pistons and ACL race-coated bearings.

$5,000 Deposit Required
Remaining balance of engine/build purchases must be paid via certified funds.

RK Autowerks M840T — Stock Rebuild Process
• Full engine disassembly and inspection
• All components cleaned to remove oil, sludge, carbon, etc.
• Rods and pistons inspected and clearances checked
• New RK-spec rod bearings and main bearings installed
• Oil pump disassembled, cleaned, and rebuilt
• All gaskets and seals replaced
• New head bolts and main bearing cap bolts installed

RK Autowerks Forged M840T
• Complete disassembly, cleaning, and inspection
• All new OE McLaren consumables (gaskets, seals, bolts, etc.)
• Rebuilt cylinder heads
• Carrillo forged connecting rods and pistons
• ACL race-coated bearings

Applications
McLaren 720S/765LT/750S/Senna/GT

Installation and Shipping
Installation is available at our Dallas/Ft. Worth, TX facility.
Freight shipping within the U.S. to commercial addresses only.
Delivery time: 7–10 days from pickup.

Core Policy
Core deposit varies depending on market value.
Send your core in advance, or pay a core charge — refunded partially or in full upon inspection.
For full core policy, contact esales@rkautowerks.com.

Warranty
Click Here For Warranty Info

Core Charges

In the situation the core is damaged, the following charges can potentially be incurred.

• Engine block: up to $15,000
• Cylinder heads: $2000–$5,000 per bank
• Oil pump: $2500
• Crankshaft: $5000 if unrepairable

Additional information

Engine Build

Stock, Forged

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