Competition Clutch Flywheel Works With 90-00 Civic

Component and system role
Competition Clutch part number 2 702 STU (SKU: COC-2-702-STU) is a competition clutch flywheel for Honda SOHC D series setups. Think of it as the anchor point for your honda civic clutch flywheel stack. It bolts to the crank, gives the disc and pressure plate a friction surface, and carries the starter ring gear. The big difference you feel comes from inertia, flywheel mass controls how fast your engine rpm climbs and drops when you stab the throttle or slip the clutch.

What this addresses versus typical factory flywheels
If you’ve ever driven a D series with an 18 lb civic flywheel or anything close to stock, you know the motor hangs onto rpm. Swap to this and you get that flywheel fast revving civic character, quicker blips, quicker rpm fall between shifts, and less stored energy when you engage the clutch. Competition Clutch positions this STU version as a civic forced induction flywheel option and also as a civic track racing flywheel and civic rally racing flywheel choice, basically anywhere you want response more than you want lazy smoothness.

Design and measurable construction details
This is a one piece 4140 forged steel flywheel. Published weight for this Honda Civic D series fitment commonly shows 8.8 lb, so it lands in the territory most people mean when they say 8 lb civic flywheel or ultra lightweight flywheel civic. It’s also a civic lightweight steel flywheel, which matters if you prefer steel’s wear behavior over aluminum friction surfaces on a street driven car.

• Material: 4140 forged steel
• Construction: one piece steel flywheel
• Variant: STU ultra lightweight
• Published weight: 8.8 lb
• Recommended use per Competition Clutch: forced induction and track and rally racing applications

Compatibility and application confirmation
This honda civic 1990 flywheel listing shows up widely for 1990 through 2005 Civic SOHC D series cars, plus 1993 through 1995 Civic del Sol and 1990 through 1991 CRX in D series form. That said, treat this like any 1990 civic performance flywheel purchase, confirm by engine series and transmission, not just chassis year. If you’re chasing civic flywheel stock compatibility, double check your clutch diameter and trans family before you order.

• Commonly listed fitment: 1990 to 2005 Honda Civic with SOHC D series engines
• Also commonly listed: 1993 to 1995 Honda Civic del Sol with SOHC D series engines
• Also commonly listed: 1990 to 1991 Honda CRX with SOHC D series engines

Selection guidance for an experienced buyer
You buy this when you want the motor to feel sharper and you’re fine with the trade offs. Ultra light means less inertia, so it can take a little more attention on takeoff, especially in traffic or with a heavier clutch. For boost cars and hard use setups, we like that you keep a steel friction surface and a one piece layout. We still run these exact parts on our own cars when the goal is response and consistency, not cushy stock manners.

Installation scope and documented considerations
You already know the deal, flywheel swap means the transmission comes out. Competition Clutch calls out replacing the pilot bearing or pilot bushing before installing the flywheel, and using an alignment tool so the disc centers correctly. Use the correct fasteners and torque specs for your chassis and engine combo, then do your clutch setup and break in like you actually want it to live.