Builder’s Choice Set
Currently Available
Builder Packs

Builder’s Choice Set

Set Number
17520
Total Pieces
521
Year Released
2017
Status
Current
Currently in production by K'NEX

Includes These Part Types:

Classic Micro Bricks
Download Instructions PDF

Parts in This Set

60 parts shown

Image Name In Set Part Number Category Add to Cart
Black 8-way Micro Connector
Black 8-way Micro Connector
$0.65 Out of Stock
9 509081 Micro Connectors Out of Stock
Gray 7-way 3D Micro Connector
Gray 7-way 3D Micro Connector
$0.15 Out of Stock
12 509072 Micro Connectors Out of Stock
Blue 4-way 3D Micro Connector
Blue 4-way 3D Micro Connector
$0.10 In Stock
10 509092 Micro Connectors
Add
Red 5-way Micro Connector
Red 5-way Micro Connector
$0.10 In Stock
15 509062 Micro Connectors
Add
Gray 4-way Micro Connector
Gray 4-way Micro Connector
$0.07 In Stock
22 509052 Micro Connectors
Add
Yellow 3-way Micro Connector
Yellow 3-way Micro Connector
$0.07 In Stock
20 509042 Micro Connectors
Add
Orange 2-way Micro Connector
Orange 2-way Micro Connector
$0.08 In Stock
8 509032 Micro Connectors
Add
Green 1-way Micro Clip with hole
Green 1-way Micro Clip with hole
$0.07 In Stock
14 509012 Micro Clips
Add
Purple 2-way Straight / Ladder Micro Connector
Purple 2-way Straight / Ladder Micro Connector
$0.11 In Stock
14 509022 Micro Connectors
Add
Green Transition Rod
Green Transition Rod
$0.19 In Stock
2 530902 Classic Rods
Add
Red Transition Rod
Red Transition Rod
$0.04 Out of Stock
2 530801 Classic Rods Out of Stock
Bright Green Transition Rod For Bricks
Bright Green Transition Rod For Bricks
$0.15 In Stock
2 841800 Classic Rods
Add
Classic To Micro Reducer Green
Classic To Micro Reducer Green
$0.12 Out of Stock
2 531100 Micro K'NEX Out of Stock
Orange Transition Rod Pin
Orange Transition Rod Pin
$0.06 In Stock
12 841700 Brick Accessories
Add
Blue Interlocking Clip
Blue Interlocking Clip
$1.88 In Stock
2 509002 Micro Clips
Add
Tan Clip With Rod End
Tan Clip With Rod End
$0.55 In Stock
2 509142 Micro Clips
Add
Purple Rod - 94mm
Purple Rod - 94mm
$0.20 In Stock
8 509542 Micro K'NEX
Add
Red Rod - 63mm
Red Rod - 63mm
$0.08 In Stock
16 509532 Micro K'NEX
Add
Gray Rod - 40mm
Gray Rod - 40mm
$0.06 In Stock
24 509522 Micro K'NEX
Add
Yellow Rod - 25mm
Yellow Rod - 25mm
$0.05 In Stock
46 509512 Micro K'NEX
Add
Black Rod - 14mm
Black Rod - 14mm
$0.08 Out of Stock
56 509502 Micro K'NEX Out of Stock
Green Flexi Rod - 190mm
Green Flexi Rod - 190mm
$0.48 Out of Stock
4 91108 Classic Rods Out of Stock
Gray Rod - 190mm
Gray Rod - 190mm
$0.46 In Stock
1 90955 Classic Rods
Add
Red Rod - 128mm
Red Rod - 128mm
$0.41 Out of Stock
7 90954 Classic Rods Out of Stock
Yellow Rod - 86mm
Yellow Rod - 86mm
$0.11 In Stock
4 90953 Classic Rods
Add
Orange Flexi Rod - 86mm
Orange Flexi Rod - 86mm
$0.40 In Stock
3 91282 Classic Rods
Add
Blue Rod - 54mm
Blue Rod - 54mm
$0.08 In Stock
11 90952 Classic Rods
Add
White Rod - 32mm
White Rod - 32mm
$0.09 In Stock
18 90951 Classic Rods
Add
Green Rod - 16mm
Green Rod - 16mm
$0.04 In Stock
23 90950 Classic Rods
Add
Black Clip With Rod End
Black Clip With Rod End
$0.10 Out of Stock
6 90914 Classic Clips Out of Stock
Orange 2-way Straight / Ladder Connector
Orange 2-way Straight / Ladder Connector
$0.20 In Stock
4 90902 Classic Connectors
Add
Red 3-way Connector
Red 3-way Connector
$0.17 In Stock
8 90904 Classic Connectors
Add
Gray 2-way Connector
Gray 2-way Connector
$0.20 Out of Stock
7 90903 Classic Connectors Out of Stock
Purple 1-way Clip with hole
Purple 1-way Clip with hole
$0.11 In Stock
3 909011 Classic Clips
Add
Tan Interlocking Clip
Tan Interlocking Clip
$0.16 In Stock
3 90900 Classic Clips
Add
White 8-way Connector
White 8-way Connector
$0.44 Out of Stock
5 90908 Classic Connectors Out of Stock
Blue 7-way 3D Connector
Blue 7-way 3D Connector
$0.30 Out of Stock
6 90907 Classic Connectors Out of Stock
Gray 4-way 3D Connector
Gray 4-way 3D Connector
$0.32 Out of Stock
4 909091 Classic Connectors Out of Stock
Yellow 5-way Connector
Yellow 5-way Connector
$0.22 Out of Stock
6 90906 Classic Connectors Out of Stock
Green 4-way Connector
Green 4-way Connector
$0.12 In Stock
17 90905 Classic Connectors
Add
Blue Thin Spacer
Blue Thin Spacer
$0.07 In Stock
16 90994 Spacers & Washers
Add
Silver Spacer
Silver Spacer
$0.08 Out of Stock
2 91224 Spacers & Washers Out of Stock
Metallic Blue Micro Spacer
Metallic Blue Micro Spacer
$0.18 In Stock
2 512242 Spacers & Washers
Add
Blue Wide Micro Spacer
Blue Wide Micro Spacer
$0.16 In Stock
13 530400 Spacers & Washers
Add
Black Snap Cap (SMALL)
Black Snap Cap (SMALL)
$0.62 In Stock
4 516400 Micro Clips
Add
Small Hub Silver/Gray - 18mm
Small Hub Silver/Gray - 18mm
$0.28 In Stock
4 531204 Wheels Tires & Pulleys
Add
Small Wheel With Spokes - 37mm
Small Wheel With Spokes - 37mm
$0.54 Out of Stock
2 91978 Wheels Tires & Pulleys Out of Stock
Small Hub or Pulley - 37mm
Small Hub or Pulley - 37mm
$0.43 In Stock
4 90978 Wheels Tires & Pulleys
Add
Mini - Blue Tri Panel
Mini - Blue Tri Panel
$0.16 In Stock
3 91011 Classic Panels
Add
1 x 1 - Transparent Red Plate
1 x 1 - Transparent Red Plate
$0.06 In Stock
2 843111F Brick Plates
Add
1 x 2 - Black Brick w/ Hole
1 x 2 - Black Brick w/ Hole
$0.09 In Stock
4 841000 Basic Bricks
Add
2 x 2 - Red Brick
2 x 2 - Red Brick
$0.08 In Stock
2 840402 Basic Bricks
Add
2 x 4 - Flat Dark Gray Plate
2 x 4 - Flat Dark Gray Plate
$0.12 In Stock
4 840207 Brick Plates
Add
2 x 4 - Dark Gray Brick
2 x 4 - Dark Gray Brick
$0.10 In Stock
6 840107 Basic Bricks
Add
2 x 4 - Dark Gray Brick w/ Long Studs
2 x 4 - Dark Gray Brick w/ Long Studs
$0.18 In Stock
1 842607 Basic Bricks
Add
1 x 4 - Black Axle Rod
1 x 4 - Black Axle Rod
$0.12 In Stock
1 841500 Brick Accessories
Add
1 x 4 - Black Axle Rod w/ Long Studs
1 x 4 - Black Axle Rod w/ Long Studs
$0.13 In Stock
1 841500L Brick Accessories
Add
Black Double Wide Racing Wheel/Hub - 37mm
Black Double Wide Racing Wheel/Hub - 37mm
$1.16 In Stock
2 91170 Wheels Tires & Pulleys
Add
Small Tire with Tread - 45mm
Small Tire with Tread - 45mm
$0.49 Out of Stock
6 91975 Wheels Tires & Pulleys Out of Stock
Small Gray Push-on Gear
Small Gray Push-on Gear
$0.54 In Stock
4 90988 Gears & Chains
Add
Black 8-way Micro Connector
In Set
9
Black 8-way Micro Connector
$0.65 Out of Stock
509081 Micro Connectors
Gray 7-way 3D Micro Connector
In Set
12
Gray 7-way 3D Micro Connector
$0.15 Out of Stock
509072 Micro Connectors
Blue 4-way 3D Micro Connector
In Set
10
Blue 4-way 3D Micro Connector
$0.10 In Stock
509092 Micro Connectors
Add
Red 5-way Micro Connector
In Set
15
Red 5-way Micro Connector
$0.10 In Stock
509062 Micro Connectors
Add
Gray 4-way Micro Connector
In Set
22
Gray 4-way Micro Connector
$0.07 In Stock
509052 Micro Connectors
Add
Yellow 3-way Micro Connector
In Set
20
Yellow 3-way Micro Connector
$0.07 In Stock
509042 Micro Connectors
Add
Orange 2-way Micro Connector
In Set
8
Orange 2-way Micro Connector
$0.08 In Stock
509032 Micro Connectors
Add
Green 1-way Micro Clip with hole
In Set
14
Green 1-way Micro Clip with hole
$0.07 In Stock
509012 Micro Clips
Add
Purple 2-way Straight / Ladder Micro Connector
In Set
14
Purple 2-way Straight / Ladder Micro Connector
$0.11 In Stock
509022 Micro Connectors
Add
Green Transition Rod
In Set
2
Green Transition Rod
$0.19 In Stock
530902 Classic Rods
Add
Red Transition Rod
In Set
2
Red Transition Rod
$0.04 Out of Stock
530801 Classic Rods
Bright Green Transition Rod For Bricks
In Set
2
Bright Green Transition Rod For Bricks
$0.15 In Stock
841800 Classic Rods
Add
Classic To Micro Reducer Green
In Set
2
Classic To Micro Reducer Green
$0.12 Out of Stock
531100 Micro K'NEX
Orange Transition Rod Pin
In Set
12
Orange Transition Rod Pin
$0.06 In Stock
841700 Brick Accessories
Add
Blue Interlocking Clip
In Set
2
Blue Interlocking Clip
$1.88 In Stock
509002 Micro Clips
Add
Tan Clip With Rod End
In Set
2
Tan Clip With Rod End
$0.55 In Stock
509142 Micro Clips
Add
Purple Rod - 94mm
In Set
8
Purple Rod - 94mm
$0.20 In Stock
509542 Micro K'NEX
Add
Red Rod - 63mm
In Set
16
Red Rod - 63mm
$0.08 In Stock
509532 Micro K'NEX
Add
Gray Rod - 40mm
In Set
24
Gray Rod - 40mm
$0.06 In Stock
509522 Micro K'NEX
Add
Yellow Rod - 25mm
In Set
46
Yellow Rod - 25mm
$0.05 In Stock
509512 Micro K'NEX
Add
Black Rod - 14mm
In Set
56
Black Rod - 14mm
$0.08 Out of Stock
509502 Micro K'NEX
Green Flexi Rod - 190mm
In Set
4
Green Flexi Rod - 190mm
$0.48 Out of Stock
91108 Classic Rods
Gray Rod - 190mm
In Set
1
Gray Rod - 190mm
$0.46 In Stock
90955 Classic Rods
Add
Red Rod - 128mm
In Set
7
Red Rod - 128mm
$0.41 Out of Stock
90954 Classic Rods
Yellow Rod - 86mm
In Set
4
Yellow Rod - 86mm
$0.11 In Stock
90953 Classic Rods
Add
Orange Flexi Rod - 86mm
In Set
3
Orange Flexi Rod - 86mm
$0.40 In Stock
91282 Classic Rods
Add
Blue Rod - 54mm
In Set
11
Blue Rod - 54mm
$0.08 In Stock
90952 Classic Rods
Add
White Rod - 32mm
In Set
18
White Rod - 32mm
$0.09 In Stock
90951 Classic Rods
Add
Green Rod - 16mm
In Set
23
Green Rod - 16mm
$0.04 In Stock
90950 Classic Rods
Add
Black Clip With Rod End
In Set
6
Black Clip With Rod End
$0.10 Out of Stock
90914 Classic Clips
Orange 2-way Straight / Ladder Connector
In Set
4
Orange 2-way Straight / Ladder Connector
$0.20 In Stock
90902 Classic Connectors
Add
Red 3-way Connector
In Set
8
Red 3-way Connector
$0.17 In Stock
90904 Classic Connectors
Add
Gray 2-way Connector
In Set
7
Gray 2-way Connector
$0.20 Out of Stock
90903 Classic Connectors
Purple 1-way Clip with hole
In Set
3
Purple 1-way Clip with hole
$0.11 In Stock
909011 Classic Clips
Add
Tan Interlocking Clip
In Set
3
Tan Interlocking Clip
$0.16 In Stock
90900 Classic Clips
Add
White 8-way Connector
In Set
5
White 8-way Connector
$0.44 Out of Stock
90908 Classic Connectors
Blue 7-way 3D Connector
In Set
6
Blue 7-way 3D Connector
$0.30 Out of Stock
90907 Classic Connectors
Gray 4-way 3D Connector
In Set
4
Gray 4-way 3D Connector
$0.32 Out of Stock
909091 Classic Connectors
Yellow 5-way Connector
In Set
6
Yellow 5-way Connector
$0.22 Out of Stock
90906 Classic Connectors
Green 4-way Connector
In Set
17
Green 4-way Connector
$0.12 In Stock
90905 Classic Connectors
Add
Blue Thin Spacer
In Set
16
Blue Thin Spacer
$0.07 In Stock
90994 Spacers & Washers
Add
Silver Spacer
In Set
2
Silver Spacer
$0.08 Out of Stock
91224 Spacers & Washers
Metallic Blue Micro Spacer
In Set
2
Metallic Blue Micro Spacer
$0.18 In Stock
512242 Spacers & Washers
Add
Blue Wide Micro Spacer
In Set
13
Blue Wide Micro Spacer
$0.16 In Stock
530400 Spacers & Washers
Add
Black Snap Cap (SMALL)
In Set
4
Black Snap Cap (SMALL)
$0.62 In Stock
516400 Micro Clips
Add
Small Hub Silver/Gray - 18mm
In Set
4
Small Hub Silver/Gray - 18mm
$0.28 In Stock
531204 Wheels Tires & Pulleys
Add
Small Wheel With Spokes - 37mm
In Set
2
Small Wheel With Spokes - 37mm
$0.54 Out of Stock
91978 Wheels Tires & Pulleys
Small Hub or Pulley - 37mm
In Set
4
Small Hub or Pulley - 37mm
$0.43 In Stock
90978 Wheels Tires & Pulleys
Add
Mini - Blue Tri Panel
In Set
3
Mini - Blue Tri Panel
$0.16 In Stock
91011 Classic Panels
Add
1 x 1 - Transparent Red Plate
In Set
2
1 x 1 - Transparent Red Plate
$0.06 In Stock
843111F Brick Plates
Add
1 x 2 - Black Brick w/ Hole
In Set
4
1 x 2 - Black Brick w/ Hole
$0.09 In Stock
841000 Basic Bricks
Add
2 x 2 - Red Brick
In Set
2
2 x 2 - Red Brick
$0.08 In Stock
840402 Basic Bricks
Add
2 x 4 - Flat Dark Gray Plate
In Set
4
2 x 4 - Flat Dark Gray Plate
$0.12 In Stock
840207 Brick Plates
Add
2 x 4 - Dark Gray Brick
In Set
6
2 x 4 - Dark Gray Brick
$0.10 In Stock
840107 Basic Bricks
Add
2 x 4 - Dark Gray Brick w/ Long Studs
In Set
1
2 x 4 - Dark Gray Brick w/ Long Studs
$0.18 In Stock
842607 Basic Bricks
Add
1 x 4 - Black Axle Rod
In Set
1
1 x 4 - Black Axle Rod
$0.12 In Stock
841500 Brick Accessories
Add
1 x 4 - Black Axle Rod w/ Long Studs
In Set
1
1 x 4 - Black Axle Rod w/ Long Studs
$0.13 In Stock
841500L Brick Accessories
Add
Black Double Wide Racing Wheel/Hub - 37mm
In Set
2
Black Double Wide Racing Wheel/Hub - 37mm
$1.16 In Stock
91170 Wheels Tires & Pulleys
Add
Small Tire with Tread - 45mm
In Set
6
Small Tire with Tread - 45mm
$0.49 Out of Stock
91975 Wheels Tires & Pulleys
Small Gray Push-on Gear
In Set
4
Small Gray Push-on Gear
$0.54 In Stock
90988 Gears & Chains
Add

See something incorrect? Help us improve this parts list by reporting any errors or missing information.

Need Parts for This Set?

Browse our full catalog of genuine K'NEX replacement parts.

Browse All Parts Request Missing Parts
Join Waitlist We generally have more stock on hand than our website shows. So stock could be updated quickly! We try to restock at least once a week if possible depending on part supplies.