Link to help you understand Carrera's Curve system - Link

Track Accessories

Digital Speed Controller, Blue Item: 30340 Price: $46.99 $38.99 Inventory: In-Stock	Wireless Set for Carrera DIGITAL 124/132 (2009) Item: 10106 Price: $128.90 $92.99 Inventory: In-Stock	Wireless Speed Controller for for Carrera DIGITAL 124/132, Exclusiv and Evolution (2009) Item: 10107 Price: $49.99 $36.99 Inventory: In-Stock
Wireless Receiver/Tower for Carrera DIGITAL 124/132, Exclusiv, Evolution (2009) Item: 10108 Price: $43.99 $29.99 Inventory: In-Stock	Carrera Digital Wireless Set Item: 10100 Price: $129.99 $92.99 Inventory: In-Stock	Wireless Speed Controller, Digital 132, Pro-X, Evolution, Exclusiv Item: 10103 Price: $52.99 $36.99 Inventory: In-Stock
Standard-straight, 4 pack Item: 20509 Price: $33.99 $28.99 Inventory: In-Stock	Standard-straight, 2 pack Item: 20601 Price: $22.99 $15.99 Inventory: In-Stock	Outside shoulder, Straight, 6 Pieces Item: 20560 Price: $23.99 $18.99 Inventory: Out of Stock, Ships in 7-10 Days
1/3-Straight Item: 20611 Price: $19.99 $15.99 Inventory: In-Stock	1/4-Straight Item: 20612 Price: $19.99 $15.99 Inventory: In-Stock	Shoulder 1/3 straight (2) Item: 20588 Price: $18.99 $14.99 Inventory: Ships soon
Shoulder 1/4 straight (2) Item: 20589 Price: $18.99 $14.99 Inventory: In-Stock	Curve 1/30°, 6 Pieces Item: 20577 Price: $44.99 $32.99 Inventory: In-Stock	Curve 1/60° 3 Pieces Item: 20571 Price: $38.99 $28.99 Inventory: In-Stock
Curve 2/30° for 4 lanes, 6 Pieces Item: 20572 Price: $49.99 $37.99 Inventory: In-Stock	Curve 3/30° for 6 lanes, 6 Pieces Item: 20573 Price: $56.99 $39.99 Inventory: In-Stock	Curve 4/15° 12 Pieces Item: 20578 Price: $62.99 $44.99 Inventory: In-Stock
High banked curve 1/30°, 6 Pieces Item: 20574 Price: $42.99 $31.99 Inventory: In-Stock	High banked curve 2/30° for 4 lanes, 6 Pieces Item: 20575 Price: $48.99 $41.99 Inventory: In-Stock	High banked curve 3/30.. 6 Pieces Item: 20576 Price: $64.99 $46.99 Inventory: In-Stock
High banked curve 4/15, 12 Pieces Item: 20579 Price: $90.99 $71.99 Inventory: Out of Stock, Ships in 7-10 Days	Digital 132/124 Pit Stop Extension Track Section Item: 30341 Price: $14.99 $12.99 Inventory: In-Stock	Digital 132/124 Lap Counter Item: 30342 Price: $75.99 $58.99 Inventory: In-Stock
Digital 132/124 Left lane change section Item: 30343 Price: $49.99 $38.99 Inventory: In-Stock	Digital 132/124 Black Box Item: 30344 Price: $59.99 $49.99 Inventory: In-Stock	Digital 132/124 Right Lane Change Section Item: 30345 Price: $49.99 $39.99 Inventory: In-Stock
Digital 132/124 Pit Stop Lane Item: 30346 Price: $79.99 $63.99 Inventory: In-Stock	Digital 132/124 Double Lane Item: 30347 Price: $65.99 $51.99 Inventory: In-Stock	Inside shoulders for curve 1/60° Item: 20551 Price: $19.99 $15.99 Inventory: Out of Stock, Ships in 7-10 Days
Outside shoulders for curve 1/60° Item: 20561 Price: $24.99 $18.99 Inventory: Out of Stock, Ships in 7-10 Days	Outside shoulders for curve 2/30° for 4 lanes Item: 20562 Price: $24.99 $18.99 Inventory: In-Stock	Outside shoulders for curve 3/30° for 6 lanes Item: 20563 Price: $28.99 $20.99 Inventory: In-Stock
Outside shoulders for high banked curve 1/30° Item: 20564 Price: $24.99 $18.99 Inventory: In-Stock	Outside shoulders for high banked curve 2/30° for 4 lanes Item: 20565 Price: $25.99 $19.99 Inventory: In-Stock	Outside shoulders for high banked curve 3/30° for 6 lanes Item: 20566 Price: $28.99 $20.99 Inventory: In-Stock
Outside shoulders for curve 1/30° Item: 20567 Price: $19.99 $15.99 Inventory: Out of Stock, Ships in 7-10 Days	Outside shoulder for curve 4/15° Item: 20568 Price: $31.99 $23.99 Inventory: In-Stock	Inside shoulder for high banked curve 1/ 30° Item: 20569 Price: $25.99 $19.99 Inventory: In-Stock
Outside shoulders for High banked curve 4/15° Item: 20580 Price: $34.99 $25.99 Inventory: In-Stock	Crossing, Item: 20587 Price: $52.99 $38.99 Inventory: In-Stock	Inside shoulder Curve 1/30° (6), end piece Item: 20590 Price: $24.99 $18.99 Inventory: Out of Stock, Ships in 7-10 Days
Inside shoulder Curve 2/30° (6), end piece Item: 20591 Price: $24.99 $18.99 Inventory: In-Stock	Inside shoulder Curve 3/30° (6), end piece Item: 20592 Price: $25.99 $20.99 Inventory: In-Stock	Inside shoulder Curve 4/15° (12),end piece Item: 20593 Price: $34.99 $25.99 Inventory: In-Stock
Inside shoulder Banked Curve 2/30° (6), Item: 20594 Price: $28.99 $20.99 Inventory: In-Stock	Inside shoulder Banked Curve 3/30° (6), Item: 20595 Price: $29.99 $21.99 Inventory: In-Stock	Inside shoulder Banked Curve 4/15° (12), Item: 20596 Price: $38.99 $27.99 Inventory: In-Stock
Outside Shoulder Crossing Item: 20597 Price: $28.99 $21.99 Inventory: In-Stock	End Pieces Outside shoulder Curve (4), b Item: 20598 Price: $15.99 $12.99 Inventory: In-Stock	End Pieces Inside shoulder Banked Curve Item: 20599 Price: $16.99 $12.99 Inventory: In-Stock
Connect. Pce. (4) BK Crve. Ins. Shoulder Item: 20600 Price: $21.99 $17.99 Inventory: In-Stock	Outside shoulder for 132/124 digital pit stop lane Item: 20602 Price: $25.99 $19.99 Inventory: In-Stock	Transformer for Exclusiv Digital 124 Item: 20760 Price: $89.99 $69.99 Inventory: In-Stock
Digital 132 Transformer DIGITAL 132 Transformator, (14,8 V - 51,8 VA) Item: 30327 Price: $49.99 $37.99 Inventory: In-Stock	Button for Digital-Speed Controllers 6pcs.(red, yellow, blue, green, gray, black) Item: 30800 Price: $9.99 $4.99 Inventory: In-Stock	Large Aluminum Carry Case Item: 70461 Price: $59.99 $47.99 Inventory: In-Stock
Support set standard support foot standard Item: 85201 Price: $6.99 $5.99 Inventory: In-Stock	Support set high banked curve Item: 85202 Price: $6.99 $5.99 Inventory: In-Stock	Support head set flexible Item: 85203 Price: $6.99 $5.99 Inventory: In-Stock
Track Connection Clips, RED Item: 85204 Price: $6.99 $5.99 Inventory: In-Stock	Metal clips for multilane extension. Item: 85205 Price: $7.99 $5.99 Inventory: In-Stock	Track connection sticks Item: 85208 Price: $7.99 $5.99 Inventory: In-Stock
Track connection stick for track connection. Item: 85209 Price: $9.99 $8.99 Inventory: In-Stock	Guard rail supports (from 2004) Item: 85219 Price: $14.99 $9.99 Inventory: In-Stock	Guard rail (from 2004) Item: 85220 Price: $23.99 $16.99 Inventory: Out of Stock, Ships in 7-10 Days
Track connectors, (from 2006 onwards) Item: 85245 Price: $7.99 $5.99 Inventory: In-Stock