SpeedFactory K Series Sidewinder Turbo Manifold for K20/K24

SpeedFactory Racing K-Series Sidewinder Turbo Manifold

If you’re hunting a real turbo manifold upgrade, or you’re piecing together a K20 turbo manifold combo that fits without turning into a weekend of swearing, this SpeedFactory K-Series turbo manifold is the one we keep recommending. The Sidewinder layout puts the turbo in a spot that actually helps, you get better room for charge piping, easier access to hardware, and less fighting the firewall. Compared to a basic log, you’ll usually see quicker boost response and a stronger midrange on street pulls. You still need to size the turbo for your goals though, a big turbo still spools like a big turbo.

SpeedFactory uses 1.5 inch Schedule 40 stainless tubing, and they TIG weld and back purge it. They also use CNC machined 1/2 inch 1018 steel flanges. That flange detail matters more than people want to admit, because flat stays sealed, and sealed means no warped gasket drama and no exhaust tick that shows up right after the first heat cycle. This Sidewinder turbo manifold K-Series works great with small to mid frame turbos for quick spool, but it won’t instantly fix a mismatched setup. Be honest about your powerband, then pick the right housing and gate.

Fitment covers the common K swap stuff and the factory K cars. It works as a K-swapped Civic turbo manifold for 1988 to 2000 EF, EG, EK, and it fits 1994 to 2001 Integra DC swaps. It also fits 2002 to 2011 Civic Si, so yes, it works as an 8th gen Civic Si Turbo Manifold. On the Acura side, it bolts up for 2002 to 2006 RSX and 2004 to 2008 TSX.. We run these exact parts on our own cars because they take abuse and keep doing their job.

Please note most sidewinder manifolds are built to order by SpeedFactory Racing and can take 6-8 weeks to ship. 

Specifications:

• Material: 1.5” Schedule 40 Stainless Steel
• Flanges: CNC Machined ½” 1018 Steel
• Welding: TIG-Welded and Back-Purged
• Turbo to Manifold Thread Pitch: M10x1.5 (current) / 3/8-16 (older versions)
• Estimated Manufacturing Time: 7–8 Weeks

Verified Fitments:

• 1988–2000 Honda Civic (EF, EG, EK) K-Swap
• 1994–2001 Acura Integra (DC) K-Swap
• 2002–2011 Honda Civic Si (EP3, FA5, FG2)
• 2002–2006 Acura RSX
• 2004–2008 Acura TSX

SKUs and flange options:
SKU: SFR-04-053 | Manifold Flange: T3, Single Turbosmart 60mm Wastegate
SKU: SFR-04-055 | Manifold Flange: T4 Divided, Single TiAL 60mm Wastegate
SKU: SFR-04-055-1 | Manifold Flange: T4 Divided, Twin 38/40mm Wastegate
SKU: SFR-04-055-2 | Manifold Flange: T4 Divided, Twin 44/46mm Wastegate
SKU: SFR-04-056 | Manifold Flange: T4 Open, Single 44/46mm V-Band Wastegate Flange
SKU: SFR-04-057 | Manifold Flange: T3, Single 44/46mm V-Band Wastegate Flange
SKU: SFR-04-058 | Manifold Flange: T4 Divided, Single Turbosmart 60mm Wastegate
SKU: SFR-04-059 | Manifold Flange: T4 Open, Single Turbosmart 60mm Wastegate

If you’re putting together a SpeedFactory manifold Honda Civic street car, you’ll feel the response and you’ll appreciate the access when you need to service it. If you’re building a track or strip setup, you’ll appreciate that it keeps sealing when EGT goes up and the car sees real heat cycles. That’s the point of a proper Sidewinder turbo manifold K-Series, consistency, not magic horsepower. This also makes a solid SpeedFactory turbo manifold TSX option when you want the turbo placement and clearance to make sense.