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ALPIDEX 9 inch SUP Universal Fin - US-BOX or Plug-in/RAIL system
US-BOX System Fin
Fin defective or lost?
Our ALPIDEX fin can be fitted as a replacement in any US-BOX fin system.
No matter which board, US-BOX fins are always inserted into a rail from the underside with a threaded plate (usually a square nut)
and screwed from the bottom to allow quick and easy assembly/disassembly.
At a glance:
- Can be fitted to any US-BOX fin system
- Dolphin shape - does not restrict turning too much
- Suitable for long straight runs as well as for curvy channels
- Durable, hard wearing, UV stable and corrosion resistant
- Please check the exact dimensions of the fin before purchasing
Fixing the fin in the US-BOX
- Place the threaded plate of the fin through the wide recess in the fin slide and push it into the front section
- Insert the fin with the rear end (here the cross pin/splint is attached) into the fin slide and push it slightly backwards
- Fold the fin all the way down so that the fin rail is completely in the carriage
- Slide the threaded plate exactly under the fin's mounting hole and screw it tight
Technical data US-BOX fin:
| Height: | 250mm |
| Length: | 166mm |
| Max. width: | 9mm (without cross pin/splint) |
| Fin screw: | 30mm |
| Fin nut: | 15mm |
| material: | 70% polyamide / 30% glass fiber |
Plug-in/RAIL fin
As a replacement or additional fin suitable for all ALPIDEX Stand Up Paddle Boards but also for boards/kayaks with Plug-in/RAIL system and pin lock.
For quick and uncomplicated assembly/disassembly, our plug-in system fins are simply inserted into a rail from the underside and fixed with the appropriate securing device.
At a glance:
- Dolphin shape - does not restrict turning too much
- Suitable for long straight runs as well as for curvy channels
- Durable, hard-wearing, UV-stable and corrosion-resistant
- Please pay attention to the exact dimensions of the fin before buying
Fasten the fin in the Plug-in/RAIL system
- Pull the locking pin (plastic plate attached to the fin with a rope) off/out of the fin and insert the fin at the open end of the slide.
In most cases, the safety pin should point backwards towards the end of the board. - Push the fin into the carriage as far as it will go. The recesses on the side of the carriage and the recess in the fin should now be at the same level.
- Insert the locking pin into the recess until it engages on the opposite side of the carriage.
Technical data Plug-in/RAIL fin
| Height: | 215mm |
| Length: | 182mm |
| Max. width: | 35mm |
| Min. width: | 31mm |
| Taper base: | 1:45,5 |
| locking pin: | 42mm x 15mm |
| material: | 70% polyamide / 30% glass fiber |
Plug-in rail system
- COMPATIBLE : the "Slide In" fin is suitable for various models of inflatable paddleboards * the removable centre fin fits almost all SUPs and longboards * perfect for the APIDEX Stand Up Paddle Board.
- FIT: for most iSUP Paddling Board - dimensions of the fin 21,5 x 18 x 3,5 cm
- MATERIAL: sturdy nylon plastic with good wear resistance and little susceptibility to breakage
- DESIGN: dolphin shape - does not restrict turning too much * suitable for long straight runs as well as for curvy channels * optimal directional stability
- EASY: uncomplicated assembly/disassembly * plug-in system fins are simply inserted into the base from the underside and fixed with the attached safety clip * no tools required
US Box System
- FIT: for every Stand Up Paddling iSUP board with US Fin Box - no matter if hard- or inflatable board * suitable for longboards, surfboards and Stand Up Paddle boards, which are equipped with central fins, which are fixed with a screw system
- MATERIAL: sturdy nylon plastic with good wear resistance and little susceptibility to breakage * corrosion-resistant stainless steel screws
- DESIGN: dolphin shape - does not restrict turning too much * suitable for long straight runs as well as for curvy channels * optimal directional stability
- EASY: uncomplicated assembly/disassembly * no tools required * place threaded plate in the fin slide, insert the fin into the groove and then fasten with the fin screw
- SUPPLY INCLUDES: two 9 inch surfboard SUP fins, 4 screws and fin plates for easy installation and more fun water sports.
| Item ID | 16484 |
| Condition | New |
| Age rating | No age restriction |
| Manufacturer | ALPIDEX |
| Manufacturing country | China |
| Content | 1 piece |
| Weight | 470 g |
| Net weight | 470 g |
| Dimensions | 300×200×25 mm |