There are a lot of bonus parts you can unlock in Mario Kart 7 for the Nintendo 3DS, most of which are unlocked by collecting coins in Grand Prix mode.
Parts that are purchased with coins are unlocked in random order, and the Golden parts are the only exception requiring specific accomplishments or coins.
Unlock Kart Parts With Coins
In Grand Prix mode, collecting coins will allow you to purchase most of the kart parts in the game. The parts show up in random order, so they are different for everyone.
Random Part 1 – 50 coins
Random Part 2 – 100 coins
Random Part 3 – 150 coins
Random Part 4 – 200 coins
Random Part 5 – 250 coins
Random Part 6 – 300 coins
Random Part 7 – 400 coins
Random Part 8 – 500 coins
Random Part 9 – 600 coins
Random Part 10 – 700 coins
Random Part 11 – 800 coins
Random Part 12 – 900 coins
Random Part 13 – 1,000 coins
Random Part 14 – 1,200 coins
Random Part 15 – 1,400 coins
Random Part 16 – 1,600 coins
Random Part 17 – 1,800 coins
Random Part 18 – 2,000 coins
Random Part 19 – 2,500 coins
Random Part 20 – 3,000 coins
Random Part 21 – 3,500 coins
Random Part 22 – 4,000 coins
Random Part 23 – 4,500 coins
Random Part 24 – 5,000 coins
Unlockable Bodies
B Dasher Body – Purchased with coins
Barrel Train Body – Purchased with coins
Blue Seven Body – Purchased with coins
Bruiser Body – Purchased with coins
Bumble V Body – Purchased with coins
Cact-X Body – Purchased with coins
Cloud 9 Body – Purchased with coins
Egg 1 Body – Purchased with coins
Koopa Clown Body – Purchased with coins
Pipe Frame Body – Purchased with coins
Tiny Tug Body – Purchased with coins
Zucchini Body – Purchased with coins
Golden Standard Body – Get a VR higher than 10,000 points, or collect 20,000 coins
Unlockable Gliders
Flower Glider – Purchased with coins
Paraglider Glider – Purchased with coins
Peach Parasol Glider – Purchased with coins
Swooper Glider – Purchased with coins
Golden Glider – Connect with 100 people through StreetPass, or collect 10,000 coins
Unlockable Tires
Slick Tires – Purchased with coins
Slim Tires – Purchased with coins
Sponge Tires – Purchased with coins
Unlockable Wheels
Red Monster Wheels – Purchased with coins
Wooden Wheels – Purchased with coins
Golden Wheels – Finish all Cups on 50cc, 100cc, 150cc, and Mirror Mode with a “1 Star” or higher
