JT front sprocket JTF394.15, 15 teeth, 520 pitch

JT front sprocket JTF394.15, 15 teeth, 520 pitch

JT front drive sprocket. The vehicle fitment list below was taken from the official JT Sprockets Application Guide 2024.

Technical specifications

• JT part number / Fitment: JTF394
• Installation position: Front / transmission output
• Chain pitch: 520
• Teeth available in shop: 15

Suitable for – official JT vehicle fitment

Important regarding tooth selection: The JT fitment number describes the compatible mounting. The application guide also specifies the number of teeth with which each vehicle is listed. A different number of teeth offered for the same fitment family changes the gear ratio and may differ from the stock gearing.

11 teeth according to JT Application Guide

• Aprilia Climber 240/280/300 (240 cc) – Year 89-96 – Chain 520, 98 links

13 teeth according to JT Application Guide

• Aprilia 125 RS (80 km/h version) Germany – Year 93-96 – Chain 520, 104 links
• Aprilia 125 RS (80 km/h version) Germany – Year 97-03 – Chain 520, 106 links

14 teeth according to JT Application Guide

• Aprilia 125 Red Rose Custom AE – Year 88-90 – Chain 520, 110 links
• Aprilia 125 Red Rose Custom – Year 91-95 – Chain 520, 110 links
• Aprilia 125 Red Rose – Year 96-99 – Chain 520, 110 links
• Aprilia 125 Pegaso – Year 89-99 – Chain 520, 104 links
• Aprilia 125 RS Replica – Year 93-03 – Chain 520, 108 links
• Aprilia 125 RX/R – Year 90-93 – Chain 520, 108 links
• Aprilia 125 RX – Year 00 – Chain 520, 114 links
• Aprilia 125 Tuareg Rally – Year 89- – Chain 520, 110 links
• Aprilia 125 Tuareg Rally – Year 90-93 – Chain 520, 108 links
• Aprilia 125 Tuareg Wind – Year 88, 90-92 – Chain 520, 104 links
• Aprilia 125 Tuareg Wind AE – Year 89-90 – Chain 520, 104 links
• Aprilia 125 Tuono – Year 03-07 – Chain 520, 104 links
• Bombardier 450 DS – Year 08 – Chain 520, 102 links

15 teeth according to JT Application Guide

• Aprilia 125 AFI Extrema – Year 93-94 – Chain 520, 108 links
• Aprilia 125 RX – Year 08-12 – Chain 520, 114 links
• Aprilia 125 SX – Year 08-12 – Chain 520, 112 links

16 teeth according to JT Application Guide

• Aprilia 125 AFI Sintesi – Year 88-89 – Chain 520, 106 links
• Aprilia 125 AFI Sport – Year 93 – Chain 520, 106 links
• Aprilia 125 AFI Sport Pro – Year 92-93 – Chain 520, 108 links
• Aprilia 125 AFI Super Sport – Year 88-90 – Chain 520, 106 links
• Aprilia 125 AFI Futura / Europa – Year 90-93 – Chain 520, 106 links
• Aprilia 125 MX – Year 04-07 – Chain 520, 112 links
• Aprilia 125 MX Finland – Year 04 – Chain 520, 112 links

17 teeth according to JT Application Guide

• Aprilia 125 RS Extrema – Year 93-03, 04-05 – Chain 520, 106 links
• Aprilia 125 RS – Year 06-12 – Chain 520, 110 links
• Aprilia 125 RX France – Year 93-97 – Chain 520, 114 links

Installation and gearing note

• Before ordering, check the model, year of manufacture, chain pitch, and desired number of teeth.
• A different number of teeth changes the gear ratio and may require a different chain length or an adjustment to the chain tension.
• Perform installation and tighten to torque specifications provided by the vehicle manufacturer.