Nissan 240SX Performance Modification/Weight Reduction

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Weight reduction increases power-to-weight ratio and can improve all aspects of how you 240SX performs. There are 2 major ways to reduce the weight of your 240SX: Removal of unnessecary items and replacement of stock items with lighter parts

Removal of Unnecessary Items[edit | edit source]

getting rid of stuff that you don't need is a great way to reduce weight in your 240SX

Weight Reduction Guide[edit | edit source]

It's amazing how much stuff you don't need in a racecar

Please contribute by weighing and inputting the actual weight of the part. Please do not put approximate or "usual average" weights but accurately obtained data. (many S13 part weights courtesey of

S13:[edit | edit source]

headunit, speakers, and rear speaker brackets - 15.4lbs

driver and passenger door panels - 11.8lbs

plastic backseat panels - 5.0lbs

plastic B-pillar panels to back - 3.0lbs

back seats - 20.8lbs

hatch wall carpeting, plastic rear speaker panels, and rear floor mats - 20.6lbs

rear wiper, motor, grommet, and blade - 3.0lbs

jack tools, jack cover cardboard, random gray foam pads - 6.4lbs

rear strut covers, miscellaneous brackets & stuff - 2.8lbs

shift boot & panel - 0.6lbs

hatch area carpeting - 3.2lbs

A/C compressor, condenser, reservoir, & some piping - 29.2lbs

windshield wiper reservoir (full of fluid), bracket, & associated tubing - 9.0lbs

PAIR valve, actuator, bracket, and fasteners - 3.0lbs

sound deadening (Round 1) *box was 1 pound* - 10.8lbs

main carpet (from floorboard to rear seats) - 11.8lbs

glovebox - 3.2lbs

gauge cluster bezel - 1.6lbs

automatic seatbelts & lapbelt assemblies - 20.0lbs

power antenna - 2.0lbs

headliner, reading lamps, and shades - 4.0lbs

miscellaneous plastic pieces - 3.6lbs

plastic passenger floorboard panel (under glovebox) - 1.6lbs

center console - 3.0lbs

ABS unit mounting bracket - 3.2lbs

ABS unit - 15.8lbs

PS resevoir - 2.0lbs

PS line - 1.4lbs

fuel catch can & bracket - 1.8lbs

HICAS solenoid - 6.4lbs

rear HICAS rack - 10.8lbs

rear HICAS distribution block - 5.2lbs

clutch loop - 1.41bs

battery tray - 1.2lbs

SE exhaust & cat - 41.0lbs

sound deadening - 29lbs

spare tire & wheel - 28.0lbs

firewall mat - 18.8lbs

sunroof glass - 11.5lbs

foam layer on dashboard - 5lbs

Total of pounds lost - 377.9

S14:[edit | edit source]

Spare tire - 25 lb

Jack - 4 lb

Rear Seats - 15 lb

Hood - 47 lb

Front Seats - 21 lb

Door Panels - 12 lb

Plastic Trim (front seats back)- 2 lb

Plastic Trim (front seats forward)- 2 lb

Front Bumper - 7 lb

Rear Bumper - 6 lb

Fenders - 6 lb

15" Alloy wheels (without tires) - 97 lb

16" Alloy wheels (without tires) - 105 lb

Trunk - 11 lb

Drive Shaft - 19 lb

Stock Electric Sunroof - 24 lb

Replacing Stock Items with Lighter Aftermarket Parts[edit | edit source]

Stock Seat (S14 Base cloth) vs Racing Seat(Bride Zeta III) - (36-12) 24 lbs

Stock Hood (S13 180sx) vs CF Hood (S13 Versus Silvia) - (40-15) 25lbs

Stock S13 front bumper - 6 lbs

Stock S13 front bumper with steel reinforcement pieces, lip spoiler and its braces - 15 lbs

Stock Battery vs Lightweight battery (Genesis) - (41-13) 28 lbs

Stock Wheels (steelies) vs Racing Wheels (Volk TE37's 16x8) (28-13) 15 lbs (per wheel)

Stock Drive Shaft vs Aluminum One Piece Drive Shaft - (19-11) 8 lbs

Stock Drive Shaft vs Carbon Fiber Once Piece Drive Shaft - (19.8-8.5) 11.3 lbs reduction

Stock flywheel vs Prolite flywheel - (22-11) 11 lbs reduction

    • All modifications to drivetrain components have an added bonus of freeing up horsepower lost by rotating weight