ACL Standard Sized High Performance Main Bearing Set (Oversized by +0.40mm) Nissan GT-R 2009-2024 | 1M2505H-STD-4

Product Fitment:

2009-2024 Nissan GT-R

Upgrade the bottom end of your high‑performance Nissan GT‑R with the ACL Race Series 1M2505H‑STD‑4 Main Bearing Set. Engineered for extreme conditions, these bearings provide enhanced strength, durability, and oil control compared to standard OEM shells. When boost levels, RPMs, and power output increase, factory bearings can become a limiting factor — ACL’s Race Series bearings are designed to handle higher loads and sustained performance use, making them ideal for race builds, turbo upgrades, and high‑stress applications.

Precision Performance Bearings

• Application: Nissan GT‑R R35 with VR38DETT engine (oversized +0.40mm)

• Race Series Quality: Tri‑metal bearing construction for superior strength and fatigue resistance

• Hardened Steel Backing: Improves stability under high load and repeated cycling

• Grooved Design: Promotes optimal oil flow and load distribution for crankshaft protection

• Strict Tolerances: Precisely engineered wall thickness for consistent oil clearance and reliable operation under extreme conditions

Why Choose ACL Race Series Bearings

Main bearings support the crankshaft and maintain oil film under high load. Upgrading to the ACL Race Series bearings provides:

• Improved reliability and durability in performance and race engines

• Reduced risk of bearing failure under boost and high RPM

• Better support for rods and crank under extreme load

• Consistent oil control for longevity and performance integrity

Technical Notes

• Part Number: 1M2505H‑STD‑4 (Oversized by +0.40mm)

• Kit Content: One set of oversized main bearing shells

• Material: Tri‑metal construction with hardened steel backing

Fitment

• Vehicle: Nissan GT‑R (R35)

• Engine: VR38DETT

• Years: 2009–2024

• Designed to match engines requiring oversized main journals after machining