Competition Clutch 91-98 Nissan 240SX KA24DE White Bunny Upgrade Stage 4 Clutch Kit w/ Flywheel
The Competition Clutch 6055-2-1620 is a complete clutch and flywheel package for the 1991 to 1998 Nissan 240SX with the KA24DE 2.4L twin-cam four and the five-speed manual. It is the Stage 4 version of Competition Clutch's White Bunny upgrade, and it is built for S13 and S14 owners whose factory-size clutch now slips in third and fourth under boost or nitrous, or who are building a drift or track car that gets clutch-kicked all day and needs more holding power than a stock-diameter disc can give.
A clutch holds torque through clamp load, friction coefficient and disc diameter. The White Bunny packages raise the third of those: Competition Clutch sells the same family as a 250 mm upgrade kit for the 240SX, and every Bunny package arrives as a matched clutch and flywheel. That matters, because the manufacturer states plainly that the clutch in a Bunny kit will not interface with an OEM-fitment flywheel, and the included flywheel will not work with an OEM-fitment clutch. You install the two together or not at all.
The -1620 suffix is Competition Clutch's Stage 4 disc code: a six-pad disc with ceramic friction buttons and a sprung hub, described by the maker as high torque with aggressive engagement (the -0620 variants are the solid-hub versions). The springs in the hub soften driveline shock compared with a rigid six-puck, which helps on a car that still sees street miles, but engagement is still close to on-off. Expect some chatter pulling away and a short learning curve in traffic.
Before spending on a Stage 4 package, rule out the hydraulics. A seized or misadjusted slave cylinder, a master cylinder that does not return fully, or a pedal with no free play can hold the release bearing against the fingers and make a healthy disc slip. A quick road test helps: in fourth gear at about 2,500 rpm, go to full throttle and watch the tachometer. If rpm climbs faster than road speed, the disc is slipping. Our slip diagnosis guide walks through the checks, and the flare versus slip article explains why a quick rpm spike is not always the clutch.
This listing covers the 1991 through 1998 240SX with the KA24DE engine, which spans late S13 cars and every S14. The 1989 to 1990 cars used the single-cam KA24E and are not part of this listing; check the engine before ordering. SR20DET-swapped cars run a different engine and need an SR-specific kit. If your car has a swapped transmission or engine, send us the year and VIN along with what is installed so we can confirm. You can compare other 240SX clutch options in our clutch and rebuild kits collection.
If you want friendlier street engagement at stock diameter, the ACT NX4-XTSS street kit uses a sprung organic street disc. If you want to keep the factory flywheel and diameter, the 6054-1620 Stage 4 kit is the non-Bunny equivalent.
The package ships at roughly 39 lb boxed, so plan on a transmission jack or a helper when you lift the gearbox back into place.
| Brand | Competition Clutch |
| Part number | 6055-2-1620 |
| Fits | Competition Clutch 91-98 Nissan 240SX KA24DE White Bunny Upgrade Stage 4 Clutch Kit w/ Flywheel |
| Vehicle fitment | Nissan 240Sx Ka24De White Bunny (1991-1998) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. Competition Clutch states that the clutch in any Bunny package will not interface with an OEM-fitment flywheel, and the included flywheel will not work with an OEM clutch. Install them together.
This listing is for 1991 to 1998 cars with the KA24DE. The 1989 to 1990 cars have the single-cam KA24E. Send us your VIN if you are unsure what is in the car.
It can be driven on the street, and the sprung hub helps, but the ceramic six-pad disc engages quickly and can chatter. For a mostly street car, a full-face street clutch is easier to live with.
No. This kit is for the KA24DE engine. SR20DET swaps need an SR-specific clutch and flywheel.
A new pilot bearing, and inspect the rear main seal, slave cylinder, fork and pivot ball. Bleed the hydraulics after the job.
