Seibon Carbon Fiber Rear Diffuser - Honda CR-Z

Regular price $440.90 USD Sale price $440.90 USD Regular price $520.00 USD
Sale 15.21% $79.10 USD (15.21%)
Sold Out
SKU: seiRD1112HDCZ
Product Description
Seibon creates performance-oriented products that help shed unnecessary weight without sacrificing style. Race after race, Seibon products have proven to be as strong as the driver's ambition to win, thus making Seibon Carbon the preferred brand among professional drivers.

Since the debut of the Honda CR-Z in the 2010 Las Vegas SEMA Show, Seibon has produced high quality Carbon accessories for the ZF1/ZF2 chassis. The carbon fiber rear diffuser replaces the OEM ZF1 diffuser with a carbon counterpart. If you're looking for high quality yet affordable Carbon Fiber products, then Seibon is the way to go!

  • Honda CR-Z [ZF1/ZF2/ZF3] (2011, 2012, 2013, 2014, 2015, 2016)


OEM Style diffuser
Made of high Quiality Carbon Fiber
Retains use of all OEM pieces
High Gloss Carbon Fiber Finish


To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

Customer Reviews

Based on 2 reviews
Jessy K.
Great product! Way better service!

This diffuser is pretty nice and looks great on lighter color cars. Fitment is A- and pretty easy to install. Not a bad price either. Thanks Kami Speed

Sean M.
Nice CF Rear Diffuser with OEM Look

I'm pretty satisfied with the Seibon CF Rear Diffuser. The fitment was average, with a little play here and there, nothing that couldn't be overcome though. The diffuser really provides the OEM look, and reuses the stock vent inserts or jdm reflectors if you're lucky enough to own those. It's really a better option than buying the OEM Honda diffuser which is fake CF and costs more. I'll post pictures soon on crzforum, as there aren't many out there.