• ACL 4M2505H-.25 Main Bearings Skyline/GT-R VR38
  • ACL 4M2505H-.25 Main Bearings Skyline/GT-R VR38
  • ACL 4M2505H-.25 Main Bearings Skyline/GT-R VR38
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ACL · 4M2505H-.25 · Main Bearing Set · Nissan Skyline VQ35HR/VQ37VHR, GT-R R35 VR38DETT

ACL · 4M2505H-.25 · Main Bearing Set · Nissan Skyline VQ35HR/VQ37VHR, GT-R R35 VR38DETT

$323.65 USD
$323.65 USD
ACL
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Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Phone Call or Text 336-900-7223

Email - support@eliteracefab.com

ACL4M2505H-.25
Looking for the lowest price?

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Phone Call or Text 336-900-7223

Email - support@eliteracefab.com

Out of stock
Engine Bearings
The ACL Race Series Main Bearing Set (Part No. 4M2505H-.25) is engineered for high-performance applications in Nissan Skyline VQ35HR, VQ37VHR, and GT-R R35 VR38DETT engines. Manufactured with tri-metal construction and...
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Easy 30 Days- No Hassle Returns
37,000+ 5 Star Reviews
MFG Fitment Guarantee

Description

The ACL Race Series Main Bearing Set (Part No. 4M2505H-.25) is engineered for high-performance applications in Nissan Skyline VQ35HR, VQ37VHR, and GT-R R35 VR38DETT engines. Manufactured with tri-metal construction and .25 oversize specification, these bearings are designed to withstand extreme RPM conditions while providing strength, consistent clearances, and reliable lubrication under load.

Key Features and Benefits

  • High-performance tri-metal main bearings

  • Oversize .25 for rebuild and repair applications

  • Built to withstand extreme high-RPM conditions

  • High-strength overlay plate with reduced thickness for fatigue resistance

  • Hardened steel backs for added stability and retention

  • Increased crush for secure housing fitment

  • No flash plating for improved heat transfer and housing grip

  • Optimized eccentricity for stable oil film under load

  • 3/4 grooved design for balanced load distribution and oil flow

  • Tight wall tolerances for precision clearances

  • Enlarged ID chamfers for compatibility with performance crankshafts

Technical Specs / Material Info

  • Sizes: STD, .25

  • Tunnel (mm): 69.993 – 70.017

  • Shaft (mm): 64.951 – 64.975

  • Max. Wall: 2.516 mm

  • Max. Length: 20 mm

  • Half Type: Upper & Lower

  • Weight: 0.36 kg

Vehicle Compatibility

Compatible with the following:

  • Nissan Skyline VQ35HR DOHC 24v

  • Nissan Skyline VQ37VHR DOHC 24v

  • Nissan GT-R R35 VR38DETT DOHC 24v Twin Turbo

Package Contents

  • One ACL Race Series Main Bearing Set

Installation Notes

  • Professional installation recommended

  • Verify correct oversize specification (.25) before ordering

  • Ensure proper lubrication and clearance during assembly

Emissions & Compliance

  • Not applicable (non-emissions-related component)

Documentation

  • No documentation provided

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Testimonials

Looks like I get to be the first review for these guys. Let me start out by saying that I have had 3 other cars of a similar caliber to my GTR serviced/worked on and upgrades installed at other shops and none took the pride and level of detail that these guys did. I wish I could see all the welds on the downpipes and exhaust because it looked like artwork. Their fabricator made sure to send me daily updates and pictures which was also a big deal to me. For being an out of state experience it made it seem more like they were local to me and that I had known them for longer.

- James Lowe

Took the leap of faith on buying a set of their R35 intakes and downpipes because the price was half of anyone elses plus their car hauls a** at the track. Install went smooth and the power seems to be even better than advertised. Cant wait to get tuned in a few weeks. Their shelf tune honestly has to be 600+ hp as I pulled on a Hellcat last night. I see these guys and gals going a long ways if they can get out there and advertise. Customer service is on point paired with BIGGG savings for the winning combo.

- Luca Harris

Bought a Motec and had these guys build the harness and set it up fully. Track car that received the level of attention and detail of a show car while here. Made me feel at home every time I popped in for a visit and always offered to buy me lunch/dinner. I don’t see me shopping anywhere else as they make you feel like your family.

- Richard Westbrook

Took the leap of faith on buying a set of their R35 intakes and downpipes because the price was half of anyone elses plus their car hauls a** at the track. Install went smooth and the power seems to be even better than advertised. Cant wait to get tuned in a few weeks. Their shelf tune honestly has to be 600+ hp as I pulled on a Hellcat last night. I see these guys and gals going a long ways if they can get out there and advertise. Customer service is on point paired with BIGGG savings for the winning combo.

- Luca Harris

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