APEXi A'PEXi - N1 Evo Extreme (Axleback) - Lexus IS250 / IS350 (2006~2013) Stainless Steel ** IN STOCK **
APEXi A'PEXi - N1 Evo Extreme (Axleback) - Lexus IS250 / IS350 (2006~2013)
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Shipping & returns
Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Product type
- Exhaust System Kit
- Category
- Motor Vehicle Exhaust
- Item condition
- New
- Manufacturer type
- Aftermarket
- Shipping dimensions (L × W × H)
- Shipping weight
- 200.0 lb
Billable shipping weight; may include dimensional weight.

The N1 Evolution Extreme carries forward the proven performance heritage of the iconic N1 muffler, engineered for maximum exhaust efficiency through its straight-through layout design. At its core is an internal hybrid silencer that balances raw power and free-flowing exhaust characteristics with refined sound resonance.
A newly designed titanium muffler tip enhances both function and form, constructed from lightweight rolled titanium, riveted onto a dual-pipe structure. This design not only acts as a diffuser to reduce exhaust temperatures but also delivers a striking heat-gradient finish for a true motorsport aesthetic.
Product Features
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Premium TIG-welded SUS304 stainless steel construction, delivering both durability and performance gains while maintaining a refined sound level.
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Application-specific fitment designed and manufactured for select chassis.
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Patented Megaphone piping structure optimizes torque and throttle response across the power-band, utilizing a unique swirling exhaust gas flow effect that has been proven through years of performance results.
| Bolt-On | Yes |
|---|---|
| Part Number | Stainless Steel Tips : 164AKT27 Titanium Tips : 164-KT27 |
| Year | 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
| Make | Lexus |
| Model | IS250 / 350 |
| Body Style | 4-Door Sedan |
| Engine |
- 4GR-FSE - 2GR-FSE |
| Chassis | GSE20, GSE25 / GSE21, GSE26 |
| Exhaust Type | N1 Evolution Extreme Muffler (N1-X) |
| Piping Diameter | 70mm. to 60.5mm. to 60.5mm. x2 |
| Tip Diameter | 123mm. x 2 |
| Pieces | 3 |
| Exhaust Tip Style | Stainless Polished Round- Dual wall rolled, Angle cut (Riveted) Titanium Burnt Round- Dual wall rolled, Angle cut (Riveted) |
| Piping Material | SUS304 Stainless Steel |
| Muffler Material | SUS304 Stainless Steel |
| Muffler Tip Material | - SUS304 Stainless - TP270 Titanium |
| System Weight | 32lbs |
| Special Notes | |
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WARNING: California Prop 65 Cancer & Reproductive Harm www.p65warnings.ca.gov |

