Go Kart Lead Ballast Weights: Brackets, Bolts & Hardware Kit

Need class weight fast? Our painted, pre-drilled lead ballast weights ship ready to bolt on: nut, bolt, and washers included. Pick a 2 lb or 5 lb below, then grab the matching chassis bracket and hardware so the whole stack stays tight on track.

✓ Nut + Bolt + Washers Included✓ Painted & Pre-Drilled✓ 2 lb ±0.2 lb Window✓ 5 lb ±0.5 lb Window✓ Inch & Metric Brackets
Lead Ballast Weights
White painted pre-drilled lead kart ballast weights with bolt, washers, and nuts installed. 5 lb stack on left, 2 lb stack on right.

Race-Ready Pre-Drilled Lead Ballast Weight

White painted lead, holes already drilled, and a full hardware set in the box (nut, bolt, washers). Stack 2 lb plates for fine tuning or add 5 lb plates when you need a bigger jump to make weight. Each piece is weighed before it ships.

  • Includes: nut, bolt, and washers for that weight
  • Finish: painted white + pre-drilled mounting hole
  • 2 lb weight window: ±0.2 lb
  • 5 lb weight window: ±0.5 lb
2 lb Lead Weight
±0.2 lb · hardware included
$15.25
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5 lb Lead Weight ★ Most Popular
±0.5 lb · hardware included
$25.75
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Prefer the full lead-weights aisle? Shop all lead weights →
Bolts, Nuts & Washers

Mounting Hardware That Matches the Weight

Extra FHCS bolts, flanged nylock nuts, and conical washers for stacking more plates, seat-mount weight kits, or replacing worn hardware. Every card shows size and type so you can add to kart without guessing.

★ Most Popular
80mm drilled shank flat head cap screw with safety pin 8mm x 80mm FHCS Drilled Shank
Metric bolt · safety-wire ready
$2.56
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70mm flat head cap screw with drilled shank and pin 8mm x 70mm FHCS Drilled Shank
Metric bolt · safety-wire ready
$2.56
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Stainless steel 8mm x 90mm FHCS flat head cap screw shown against white background 8mm x 90mm FHCS Stainless
Metric · longer stack for thick plates
$2.03
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8mm x 80mm Stainless Steel Flat Head Cap Screw 8mm x 80mm FHCS Stainless
Metric · standard ballast length
$1.67
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Stainless steel 8mm diameter flat head cap screw, 70mm length, ideal for kart seat mounting 8mm x 70mm FHCS Stainless
Metric · shorter stack
$1.20
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★ Most Popular
Metric flanged nylock nut for kart wheel retention 8mm Flanged Nylock Nut
Metric · locks under vibration
$1.99
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★ Most Popular
Black anodized conical seat washer for kart screws Conical Seat Washer Black
8mm / 5/16" · anodized
$5.93
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Silver aluminum conical seat washer for kart seat mounting Conical Seat Washer Silver
8mm / 5/16" · aluminum
$2.63
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Red anodized conical seat washer for secure kart racing hardware Conical Seat Washer Red
8mm / 5/16" · anodized
$4.93
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Blue anodized aluminum conical seat washer for kart mounting Conical Seat Washer Blue
8mm / 5/16" · anodized
$4.93
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Weight mounting tab with 3/8-inch hole for kart chassis Weight Mounting Tab
Weld-on / bolt-on tab
$2.99
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Seat weight bolt mounting kit with stainless plates and rivets Seat Weight Bolt Mounting Kit
Complete seat-mount weight kit
$42.62
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PUFT fuel tank ballast weight piece for kart racing balance PUFT Fuel Tank Ballast
Tank-mounted ballast piece
$6.75
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Chassis Weight Brackets

Chassis Ballast Mounts (Inch + Metric)

Match the bracket to your frame-rail diameter. Every size below lists both inches and millimeters so US and metric chassis are easy to pick.

Install tip: grip paper under the bracket

Before you clamp the bracket on the frame rail, wrap a strip of grip paper (or non-skid tape) around the tube where the clamp sits. The grit bites the rail so the bracket cannot spin when you torque the bolts, and the stack stays locked under vibration. One wrap is usually enough. Do not build up so much thickness that the clamp will not close.

Quick size key: 3/4" = 19.1 mm · 1" = 25.4 mm · 1-1/8" = 28.6 mm · 1-1/4" = 31.8 mm · 30 mm = 1.18" · 32 mm = 1.26"
★ Most Popular
1 1/8 inch long aluminum weight bracket in use Long Weight Bracket 1-1/8"
1-1/8" (28.6 mm) · long arm
$14.71
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Compact 1 1/8 inch short weight bracket on kart chassis Short Weight Bracket 1-1/8"
1-1/8" (28.6 mm) · short arm
$9.91
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★ Most Popular
Short 30mm metric weight bracket compact on kart frame Short Metric Bracket 30mm
30 mm (1.18") · short arm
$16.88
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Long arm 30mm metric aluminum weight bracket for kart components Long Metric Bracket 30mm
30 mm (1.18") · long arm
$16.88
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Extended 1 inch long weight bracket for kart tuning Long Weight Bracket 1"
1" (25.4 mm) · long arm
$14.71
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1 inch short aluminum weight bracket for kart weight placement Short Weight Bracket 1"
1" (25.4 mm) · short arm
$9.91
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Long 1 1/4 inch weight bracket mounted extended on kart Long Weight Bracket 1-1/4"
1-1/4" (31.8 mm) · long arm
$14.71
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1 1/4 inch short weight bracket securing weights on kart Short Weight Bracket 1-1/4"
1-1/4" (31.8 mm) · short arm
$9.91
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Long 3/4 inch weight bracket extended on kart frame Long Weight Bracket 3/4"
3/4" (19.1 mm) · long arm
$14.71
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Short 3/4 inch weight bracket mounted on kart frame Short Weight Bracket 3/4"
3/4" (19.1 mm) · short arm
$9.91
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Compact short 32mm metric bracket for kart weight securing Short Metric Bracket 32mm
32 mm (1.26") · short arm
$16.88
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32mm metric long arm weight bracket aluminum for kart mounting Long Metric Bracket 32mm
32 mm (1.26") · long arm
$16.88
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Margay Ignite weight bracket installed on steering support Margay Ignite Weight Bracket
Ignite-specific · hardware included
$24.85
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1.25 inch aluminum bracket clamp with hex screws for kart mounting JR Aluminum Bracket Clamp 1.25"
1.25" (31.8 mm) · closeout
$5.70
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Seat Padding

Seat Padding While You Are Making Weight

Adhesive rolls and three-piece pad kits keep the driver planted after you shift ballast. Looking for full seats or struts? Jump to the seats collection from here.

★ Most Popular
Black three-piece Velcro seat upholstery kit for kart seats 3-Piece Seat Upholstery Kit
Black self-adhesive · sprint & oval
$48.75
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★ Most Popular
Roll of 1/2 inch thick adhesive seat padding for kart racing seats Adhesive Padding Roll 4" Wide
1/2" thick · 4" x 6 ft
$36.80
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Three-piece set of adhesive seat pads including hip and back supports 3-Piece Adhesive Seat Pad Set
Hip pads + back pad
$29.83
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Roll of 1/2-inch thick 3-inch wide adhesive seat padding unrolled to 6 feet Adhesive Padding Roll 3" Wide
1/2" thick · 3" x 6 ft
$36.80
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Colored Racer's Tape

Colored Tape + Non-Skid for the Frame Rail

Use non-skid under weight brackets (see tip above). Use colored rolls for bodywork, number backgrounds, and pit repairs.

★ Most Popular
ISC Racer's Non-Skid Tape 4 inch wide 10ft roll in sparkle black Non-Skid Grip Tape 4"
4" x 10 ft · for frame rails
$27.63
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★ Most Popular
Roll of 2x90 black adhesive tape for kart use Black Racer's Tape 2x90
2" x 90' · 13 mil extreme duty
$9.32
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★ Most Popular
Roll of ductape that is bright yellow with white background and rolled out 6 or 8 inches. Fluorescent Yellow Tape 2x90
2" x 90' · high-vis
$11.35
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Red 2x90 adhesive tape roll for kart bodywork Red Racer's Tape 2x90
2" x 90' · bodywork
$9.32
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Roll of white 2x90 racer's tape for kart bodywork repairs White Racer's Tape 2x90
2" x 90' · bodywork
$9.32
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Blue 2x90 tape roll for kart bodywork applications Blue Racer's Tape 2x90
2" x 90' · bodywork
$9.32
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Roll of 2x45 black and white checkered tape for karts Checkered Tape 2x45
2" x 45' · accent
$14.06
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Orange 2x90 tape roll for vibrant kart use Orange Racer's Tape 2x90
2" x 90' · bodywork
$11.90
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Numbers & Panels

Number Stickers & Number Panels

Finish the kart with rigid panels or stick-on backgrounds, plus black or white digit packs.

★ Most Popular
White plastic number panels for kart bodywork White Plastic Number Panel
Rigid panel · high visibility
$9.91
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Yellow plastic panels for vibrant kart numbering Yellow Plastic Number Panel
Rigid panel · high visibility
$9.91
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Black plastic panels for kart number mounting Black Plastic Number Panel
Rigid panel · durable
$9.91
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Blue plastic number panels for kart labeling Blue Plastic Number Panel
Rigid panel · durable
$9.91
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Yellow stick-on panel for compliant kart numbering Yellow Stick-On Panel
Adhesive panel · rule-friendly
$1.73
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White adhesive stick-on panel for kart numbers White Stick-On Panel
Adhesive panel · easy apply
$3.48
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★ Most Popular
Black kart racing numbers 10-pack decals for high-visibility track identification Black Numbers 10-Pack
Pick digit at checkout
$15.00
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White kart racing numbers decals pack for easy track identification White Numbers 10-Pack
Pick digit at checkout
$11.70
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