Clutch Masters 02-06 Acura RSX 2.0L 5spd / 02-10 Honda Civic SI 2.0L 6spd (For 08037-TD7R)

Clutch Masters RK08037-7R is the rebuild kit for the 08037-TD7R 725 Series Race twin-disc clutch on Honda and Acura K-series engines, including the 2002-2006 Acura RSX 2.0L and the Civic Si. It is not a complete clutch. It is the wear parts for a twin disc you already run, so a drag or track car can start a new season with fresh friction instead of buying a whole new clutch. Racers often keep the same billet cover for several seasons and only swap discs and the floater.

What the rebuild kit replaces in a K-series twin disc

The 725 Series is a 7.25 in twin-disc clutch: two small discs share the clamp load from one pressure plate, with a steel floater (mid plate) sandwiched between them. The TD7R Race version uses two ceramic discs. Over time the discs lose thickness, and the floater surfaces glaze or heat-check, so clamp load drops and the clutch starts to slip. Clutch Masters lists the contents of RK08037-7R as:

• Two 7.25 in ceramic friction discs
• One steel floater (mid plate)
• An alignment tool

A release bearing is not included; Clutch Masters sells it separately. When ordering direct, the maker also offers an optional CM-PP-7 steel pressure plate ring for the FX725 pressure plate.

Signs your twin disc is due for a rebuild

• Rpm flares on hard shifts or at the top of a gear that the clutch used to hold
• The engagement point has moved noticeably higher on the pedal
• A burnt smell or dark dust in the bellhousing after launches
• Shudder or noise on engagement that was not there when the clutch was new
• Disc wear or floater heat marks found at a scheduled teardown

How to check before you order

A datalog of a pull in third or fourth gear tells you quickly: if engine rpm climbs while vehicle speed does not, the clutch is slipping. Then rule out the hydraulics, since a tired master or slave cylinder or a leaking line can keep the clutch from releasing or clamping correctly. Our slipping diagnosis guide explains the logging method and shift flare vs slip shows how to read the result. If the line has been leaking, a master, slave and braided line kit fixes that at the same time. At teardown, measure the cover and floater for heat damage; if the cover itself is damaged, buy a complete kit instead.

Fitment

This kit only fits the Clutch Masters 08037-TD7R Race 725 Series twin disc. It is not a match for the TD7S Street version, the Pro Series twin, single-disc kits, or the factory clutch. Our listing title names the 2002-2006 Acura RSX 2.0L 5-speed and the Civic Si 2.0L 6-speed. Clutch Masters lists the 08037 rebuild kit for these K-series applications:

• Acura RSX 2002-2006 2.0L 5-speed and Type-S 6-speed
• Honda Civic Si 2002-2005 2.0L 5-speed, 2006-2011 2.0L 6-speed and 2012-2015 2.4L 6-speed
• Acura TSX 2004-2014 2.4L, Acura CSX 2006-2011 Type-S, Acura ILX 2013-2015 2.4L 6-speed
• Honda Accord 2003-2012 2.4L

Check the part number on your existing clutch before you order; if it is not 08037-TD7R, send us the number and we will match it. If you do not own the twin disc yet, start with the complete 08037-TD7R-X K-series twin-disc kit or the 08037-TD7R-S kit with steel flywheel. More options are in our clutch and rebuild kits section.

Install notes

• Mark the orientation of the floater and discs as you take the old clutch apart and follow the Clutch Masters instruction sheet for stack order.
• Clean the flywheel and pressure plate faces and check both for cracks, heat checking and warpage before reusing them.
• Center both discs with the supplied alignment tool and tighten the cover bolts gradually in a star pattern.
• Inspect the release bearing and pilot and replace them if they are rough or noisy.
• Bleed the hydraulics until the pedal is firm, then follow the Clutch Masters break-in before hard launches.

What comes in RK08037-7R?

Clutch Masters lists two 7.25 in ceramic friction discs, one steel floater (mid plate) and an alignment tool. It does not include a pressure plate, flywheel or release bearing.

Will it rebuild the TD7S Street twin disc?

No. This kit is listed for the 08037-TD7R Race twin disc, which uses two ceramic discs. Send us the part number on your clutch and we will find the correct rebuild parts.

Does it fit a Civic Si or TSX as well as the RSX?

Clutch Masters lists the 08037 rebuild kit for K-series cars including the 2002-2006 RSX, 2002-2015 Civic Si, TSX, CSX, ILX and 2003-2012 Accord 2.4L. What matters is that the car has the 08037-TD7R twin disc installed.

When should I rebuild instead of buying a new clutch?

Rebuild when the discs and floater are worn but the billet cover and flywheel are undamaged. If the cover is cracked or heat-damaged, replace the complete clutch.

Do I need a new release bearing?

The kit does not include one. Clutch Masters sells the release bearing separately; replace it if it is noisy, rough or has high miles.

• How to Diagnose Transmission Slipping
• Shift Flare vs. Slip: How to Tell Them Apart
• Automatic vs. Manual Transmission Repair Cost