Subaru WRX 2015-2021 Alcantara Kit: Ultimate vs Starter
By Custom Shift Knobs & Interior Mods | Published: 2026-11-01
Category: Comparisons
Compare the Billetworkz Alcantara Ultimate and Starter kits for the 2015-2021 WRX, plus the Pro kit for the 2008-2014 STI, to choose the right interior upgrade.
Quick answer
For most 2015-2021 WRX owners, the Starter kit delivers the biggest touchpoint upgrade for the least money, while the Ultimate kit is for those who want a fully coordinated Alcantara interior including the shift knob and door pulls. The Pro kit is the only option here for the 2008-2014 STI.
Why the WRX and STI kits are not interchangeable
The Starter and Ultimate kits are listed for the 2015-2021 WRX, while the Pro kit is listed for the 2008-2014 STI. That means you cannot simply pick the Pro kit for a newer WRX or the Starter kit for an older STI. The model-year split is the first decision you need to make before comparing contents or price.
The real trade-off: touchpoints vs. budget
The Starter kit covers the shift boot and e-brake boot—two areas your hands and arms contact every time you drive. The Ultimate kit adds a Fusion Alcantara shift knob and two sets of door pull straps, so it touches more of the cabin but costs significantly more. Neither kit is 'better' in isolation; the right choice depends on whether you want a focused upgrade or a full interior theme.
What you give up with each choice
Choosing the Starter kit means you keep your factory shift knob and door pulls, so the Alcantara look stops at the center console. Choosing the Ultimate kit means paying for components you may not need if your shift knob is already aftermarket or your door pulls are not a priority. The Pro kit sits in the middle on content but is limited to the older STI, so newer WRX owners cannot use it.
How to choose your kit
- If you drive a 2015-2021 WRX and want the best value: Choose the Starter kit. It replaces the shift boot and e-brake boot with authentic Alcantara for the lowest cost, leaving your shift knob and door pulls factory.
- If you drive a 2015-2021 WRX and want a full Alcantara interior: Choose the Ultimate kit. It adds a Fusion Alcantara shift knob and two sets of door pull straps, so every major touchpoint matches.
- If you drive a 2008-2014 STI: Choose the Pro kit. It is the only listed option for that model and includes the shift boot, e-brake boot, and one set of door pull straps.
Kit facts at a glance
- Billetworkz Alcantara Kit (Ultimate): Shift Knob, Shift Boot, E-Brake Boot Kit, and Door Pull Straps (2 Sets) - Subaru WRX 2015-2021: Includes a performance-weighted Fusion Alcantara shift knob and two sets of door pull straps, in addition to the shift boot and e-brake boot. This is the only kit here that replaces the shift knob and door pulls, giving you a fully coordinated Alcantara cabin.
Billetworkz Alcantara Kit (Ultimate): Shift Knob, Shift Boot, E-Brake Boot Kit, and Door Pull Straps (2 Sets) - Subaru WRX 2015-2021 - Billetworkz Alcantara Kit (Starter): Shift Boot and E-Brake Boot Kit – Subaru WRX 2015-2021: Covers the shift boot and e-brake boot only, using authentic Alcantara to replace factory plastic or pleather. It upgrades the two most frequently touched points without the cost of a shift knob or door pulls.
Billetworkz Alcantara Kit (Starter): Shift Boot and E-Brake Boot Kit – Subaru WRX 2015-2021 - Billetworkz Alcantara Kit (Pro): Shift Boot, E-Brake Boot Kit and Door Pull Straps (1 Set) – Subaru STI 2008-2014: Fits the 2008-2014 STI and includes the shift boot, e-brake boot, and one set of door pull straps. It is the only option here for that generation, adding door pulls without the Ultimate kit's shift knob.
Who each kit is for
Best for
- 2015-2021 WRX owners who want a high-impact, lower-cost interior upgrade (Starter)
- 2015-2021 WRX owners who want a fully coordinated Alcantara cabin including shift knob and door pulls (Ultimate)
- 2008-2014 STI owners who want matching Alcantara on the center console and door panels (Pro)
Not for
- 2015-2021 WRX owners who want to keep their factory shift knob and door pulls (choose Starter instead of Ultimate)
- 2008-2014 STI owners who want a shift knob included (no kit here includes one for that generation)
- Owners of other Subaru models or model years not listed
