TRE - QR25 Block Upgrade (QR25-BLK-STG1)

TRE - QR25 Block Upgrade (QR25-BLK-STG1)

Vendor: TRE / Treadstone

Available: In stock

SKU: TRE-QR25-BLK-STG1 -1

$4,400.00

The factory block on the QR25DE isn't built to handle a lot of power over stock. Upgrading is necessary to ensure that your engine can handle the increased stress of...
 
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60 days return policy

 
TELEPHONE SUPPORT

(239) 270-5116

The factory block on the QR25DE isn't built to handle a lot of power over stock. Upgrading is necessary to ensure that your engine can handle the increased stress of turbocharging and high-performance driving. Treadstone builds each and every engine with precision measurements and care to make sure that your engine leaves our facility ready to take on the power that lies ahead.

Stage 1: We upgrade your stock block with new rods, pistons, bearings, main studs, and a block guard.

  • Molnar Rods w/ ARP Rod Bolts
  • CP Forged Pistons 8.5:1, 9.5:1 and 10.9:1 available
  • ACL Main Bearings
  • ACL Rod Bearings
  • Nissan Thrust Washers
  • SuperTech Block Guard
  • ARP Hardened Steel Main Studs
  • Disassembly/Hot Tank (Block Cleaning)
  • Bore and Hone Cylinders
  • Short Block Assembly
  • Check, Polish, and Balance Crankshaft
  • Balance rotating and reciprocating assembly

Stage 2: Everything that is included in the Stage 1 kit, but we also add Darton MID Sleeves to improve combustion, sealing, and cooling.

  • Molnar Rods w/ ARP Rod Bolts
  • CP Forged Pistons 8.5:1, 9.5:1 and 10.9:1 available
  • ACL Main Bearings
  • ACL Rod Bearings
  • Nissan Thrust Washers
  • ARP Hardened Steel Main Studs
  • Darton M.I.D. Sleeves
  • Disassembly/Hot Tank (Block Cleaning)
  • Bore and Hone Cylinders
  • Short Block Assembly
  • Darton M.I.D. Sleeves Installation
  • Check, Polish, and Balance Crankshaft
  • Balance rotating and reciprocating assembly
  • Resurface block and step deck

Stage 3: Engineered specifically for the 02-06 QR25DE, Stage 3 includes the Crankshaft Upgrade Kit, allowing you to rev higher and make even more power. Stage 3 also includes the parts in Stage 1 and Stage 2. You send us your stock block, and we send you a built block that's ready to race.

  • Crower Rods w/ ARP Rod Bolts
  • CP Forged Pistons w/ upgraded wrist pin 8.5:1, 9.5:1 and 10.9:1 available
  • King Main Bearings
  • King Rod Bearings
  • Nissan Thrust Washers
  • ARP Hardened Steel Main Studs
  • Darton M.I.D. Sleeves
  • Fully-Balanced Crankshaft (02-06 QR25 only)
  • Disassembly/Hot Tank (Block Cleaning)
  • Bore and Hone Cylinders
  • Short Block Assembly
  • Darton M.I.D. Sleeves Installation
  • Check, Polish, and Balance Crankshaft
  • Balance rotating and reciprocating assembly
  • Resurface block and step deck

    All prices include a $600 core charge, which is refunded when we receive your block. If you wish for us to only work on your block and not send you a crate block, we will refund the core charge upon receiving your block. All blocks are fully disassembled and inspected prior to core charge refund. If your block is in unusable condition, then another block must be sourced and the core charge refund is void.

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