APEXi - N1 Evolution Damper - Lexus ISF 2008-2014
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
·Equipped withhigh-rigidity pillow ball upper mounts
·Usesdedicated damper fluidwith excellent resistance to degradation, maintainingstable damping performanceover time
·25-step damping force adjustmentandfull-length height adjustmentincluded on all models
·Fitted withlightweight and compliant N1 Spring II
·Fully compatible withoverhaul (O/H) and damping re-setting services
·Available intwo specifications:
· Sports Standard Specification
· Special Order (Custom-Made) Specification
To achieve optimal performance and driving feel across circuit driving and public road conditions, the A’PEXi N1 Evolution Damper represents the ultimate expression of A’PEXi suspension engineering. Every single component has been designed without compromise to deliver ideal characteristics for varying driving styles and stages.
Built upon decades of experience and proven results, each application undergoes repeated vehicle-specific installation and testing, ensuring precise setup and consistent performance across all supported models. The N1 Evolution Damper is the result of continuous evolution, driven by real-world data and relentless refinement.
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● φ46 Linear Piston The N1 Evolution Damper features a completely redesigned φ46 resin-bonded piston, developed exclusively for this system. Considering real-world street conditions such as rutted pavement and consecutive road gaps, A’PEXi adopted a linear port design that maintains linear damping characteristics up to approximately 1.5 m/s piston speed. By allowing the suspension to move proactively, the system achieves both sporty, precise control and a supple ride quality without harsh impact. The piston ring uses a specially formulated resin material, significantly reducing friction while extending service life and suppressing abnormal noise, greatly improving overall quietness and refinement. |
 
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● Pillow Ball Upper Mount All N1 Evolution Damper models are equipped as standard with high-rigidity pillow ball upper mounts. A thick, CNC-machined duralumin upper plate combined with a high-precision NMB pillow ball joint ensures smooth, stress-free operation while accurately responding to even minimal suspension movement. To further enhance ride comfort, the system incorporates revised bump rubber shapes and extended damper stroke on the cylinder side, achieving an exceptional balance between direct handling response and ride compliance. For MacPherson strut (inverted) applications, a camber-adjustable pillow ball upper mount is included as standard equipment. |
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● High-Quality Materials Performance and reliability take absolute priority in the N1 Evolution Damper. With uncompromising attention to detail, A’PEXi selects the best possible materials and manufacturing methods, regardless of cost. The damper body utilizes a high-strength steel monotube construction, offering outstanding rigidity and durability. Rather than decorative finishes, the surface is treated with zinc plating, reducing galvanic corrosion and ensuring long-term resistance to harsh environments. The N1 Damper Series was also among the first in the market to adopt full-length height adjustment, a feature now widely considered standard. |
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● Damper Fluid Developed exclusively for this system, the N1 NEW Damper Fluid is truly the lifeblood of the N1 Evolution Damper. Designed to resist heat fade, improve break-in characteristics, and maintain stability over extended use, it delivers consistent damping performance even under extreme conditions. Proven through A’PEXi’s extensive experience in GT racing, this high-performance fluid is an essential element of the N1 Evolution Damper’s core performance and without it, the true nature of the system cannot be fully realized. |
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| Bolt-On | Yes |
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| Part Number | 264CT101 |
| Damper Model | N1 Evolution Damper |
| Year | 2008, 2009, 2010, 2011, 2012, 2013, 2014 |
| Make | Lexus |
| Engine | 2UR-GSE |
| Chassis | USE20 |
| Piston Diameter | 46mm. |
| Damper Type | Standard |
| Spring: Length / Rate | - Front: 9 inch / 12K - Rear: 9 inch / 10K |
| Damper Camber Adjustment | Not applicable |
| Damper Height Adjustment Range (mm.) |
- Front: +20mm ~ -70mm - Rear: +20mm ~ -70mm |
| Special Notes | Call for stock status and Special Order |
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WARNING: California Prop 65 Cancer & Reproductive Harm www.p65warnings.ca.gov |
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.