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| APPLICAZIONI | MODELLO | CC | ANNO | POSIZIONE | PIGNONE ORIGINALE | CORONA ORIGINALE | PASSO CATENA | GAS GAS | MC 125 | 125 | 22 | ANT / POST - SX | |
| 520 | MC 125 | 125 | 23 | ANT / POST - SX | |
| 520 | HONDA | CR R | 125 | 03 | ANT / POST - SX | |
| 520 | CR R | 125 | 04 | ANT / POST - SX | |
| 520 | CR R | 125 | 05 | ANT / POST - SX | |
| 520 | CR R | 125 | 06 | ANT / POST - SX | |
| 520 | CR R | 125 | 07 | ANT / POST - SX | |
| 520 | CR R | 125 | 08 | ANT / POST - SX | |
| 520 | CR R | 250 | 82 | ANT / POST - SX | |
| 520 | CR R | 250 | 83 | ANT / POST - SX | |
| 520 | CR R | 250 | 84 | ANT / POST - SX | |
| 520 | CR R | 250 | 85 | ANT / POST - SX | |
| 520 | CR R | 250 | 88 | ANT / POST - SX | |
| 520 | CR R | 250 | 89 | ANT / POST - SX | |
| 520 | CR R | 250 | 90 | ANT / POST - SX | |
| 520 | CR R | 250 | 91 | ANT / POST - SX | |
| 520 | CRF R | 250 | 11 | ANT / POST - SX | |
| 520 | CRF R | 250 | 12 | ANT / POST - SX | |
| 520 | CRF R | 250 | 13 | ANT / POST - SX | |
| 520 | CRF R | 250 | 14 | ANT / POST - SX | |
| 520 | CRF R | 250 | 15 | ANT / POST - SX | |
| 520 | CRF R | 250 | 16 | ANT / POST - SX | |
| 520 | CRF R | 250 | 17 | ANT / POST - SX | |
| 520 | CRF R | 250 | 18 | ANT / POST - SX | |
| 520 | CRF R | 250 | 19 | ANT / POST - SX | |
| 520 | CRF R | 250 | 20 | ANT / POST - SX | |
| 520 | CRF R | 250 | 21 | ANT / POST - SX | |
| 520 | CRF X | 250 | 04 | ANT / POST - SX | |
| 520 | CRF X | 250 | 05 | ANT / POST - SX | |
| 520 | CRF X | 250 | 06 | ANT / POST - SX | |
| 520 | CRF X | 250 | 07 | ANT / POST - SX | |
| 520 | CRF X | 250 | 08 | ANT / POST - SX | |
| 520 | CRF X | 250 | 09 | ANT / POST - SX | |
| 520 | CRF X | 250 | 10 | ANT / POST - SX | |
| 520 | CRF X | 250 | 11 | ANT / POST - SX | |
| 520 | CRF X | 250 | 12 | ANT / POST - SX | |
| 520 | CRF X | 250 | 13 | ANT / POST - SX | |
| 520 | CRF X | 250 | 14 | ANT / POST - SX | |
| 520 | CRF X | 250 | 15 | ANT / POST - SX | |
| 520 | CRF X | 250 | 16 | ANT / POST - SX | |
| 520 | CRF X | 250 | 17 | ANT / POST - SX | |
| 520 | CRF X | 250 | 18 | ANT / POST - SX | |
| 520 | CRF RX | 400 | 18 | ANT / POST - SX | |
| 520 | CRF RX | 400 | 19 | ANT / POST - SX | |
| 520 | CRF RX | 400 | 20 | ANT / POST - SX | |
| 520 | CRF RX | 400 | 21 | ANT / POST - SX | |
| 520 | CRF RX | 400 | 22 | ANT / POST - SX | |
| 520 | CRF R | 450 | 13 | ANT / POST - SX | |
| 520 | CRF R | 450 | 14 | ANT / POST - SX | |
| 520 | CRF R | 450 | 15 | ANT / POST - SX | |
| 520 | CRF R | 450 | 16 | ANT / POST - SX | |
| 520 | CRF R | 450 | 17 | ANT / POST - SX | |
| 520 | CRF R | 450 | 18 | ANT / POST - SX | |
| 520 | CRF R | 450 | 19 | ANT / POST - SX | |
| 520 | CRF R | 450 | 20 | ANT / POST - SX | |
| 520 | CRF R | 450 | 21 | ANT / POST - SX | |
| 520 | CRF RL ABS | 450 | 19 | ANT / POST - SX | |
| 520 | CRF RL ABS | 450 | 20 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 17 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 18 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 19 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 20 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 21 | ANT / POST - SX | |
| 520 | CRF RX | 450 | 22 | ANT / POST - SX | |
| 520 | HONDA-HM | CR E | 125 | 92 | ANT / POST - SX | |
| 520 | CR E | 125 | 03 | ANT / POST - SX | |
| 520 | CRF R | 250 | 08 | ANT / POST - SX | |
| 520 | CRF R | 250 | 09 | ANT / POST - SX | |
| 520 | CRF R | 250 | 10 | ANT / POST - SX | |
| 520 | CRF R | 250 | 11 | ANT / POST - SX | |
| 520 | CRF R | 250 | 12 | ANT / POST - SX | |
| 520 | CRF R | 250 | 13 | ANT / POST - SX | |
| 520 | CRF R | 450 | 04 | ANT / POST - SX | |
| 520 | CRF R | 450 | 05 | ANT / POST - SX | |
| 520 | CRF R | 450 | 06 | ANT / POST - SX | |
| 520 | CRF R | 450 | 07 | ANT / POST - SX | |
| 520 | CRF R | 450 | 08 | ANT / POST - SX | |
| 520 | CRF R | 450 | 09 | ANT / POST - SX | |
| 520 | CRF R | 450 | 10 | ANT / POST - SX | |
| 520 | CRF R | 450 | 11 | ANT / POST - SX | |
| 520 | CRF R | 450 | 12 | ANT / POST - SX | |
| 520 | CRF R | 450 | 13 | ANT / POST - SX | |
| 520 | CRF R | 450 | 14 | ANT / POST - SX | |
| 520 | HUSABERG | FC | 450 | 04 | ANT / POST - SX | |
| 520 | FC | 450 | 05 | ANT / POST - SX | |
| 520 | FE E | 450 | 04 | ANT / POST - SX | |
| 520 | FE E | 450 | 05 | ANT / POST - SX | |
| 520 | FE E | 450 | 06 | ANT / POST - SX | |
| 520 | FE E | 450 | 07 | ANT / POST - SX | |
| 520 | FE E | 450 | 08 | ANT / POST - SX | |
| 520 | HUSQVARNA | CR | 125 | 90 | ANT / POST - SX | |
| 520 | CR | 125 | 91 | ANT / POST - SX | |
| 520 | CR | 125 | 92 | ANT / POST - SX | |
| 520 | CR | 125 | 93 | ANT / POST - SX | |
| 520 | CR | 125 | 94 | ANT / POST - SX | |
| 520 | WR | 125 | 90 | ANT / POST - SX | |
| 520 | WR | 125 | 91 | ANT / POST - SX | |
| 520 | WR | 125 | 92 | ANT / POST - SX | |
| 520 | WR | 125 | 93 | ANT / POST - SX | |
| 520 | WR | 125 | 94 | ANT / POST - SX | |
| 520 | WR | 125 | 95 | ANT / POST - SX | |
| 520 | WR | 125 | 96 | ANT / POST - SX | |
| 520 | WR | 125 | 97 | ANT / POST - SX | |
| 520 | WR E | 125 | 90 | ANT / POST - SX | |
| 520 | WR E | 125 | 91 | ANT / POST - SX | |
| 520 | WR E | 125 | 92 | ANT / POST - SX | |
| 520 | WR E | 125 | 93 | ANT / POST - SX | |
| 520 | WR E | 125 | 94 | ANT / POST - SX | |
| 520 | WR E | 125 | 95 | ANT / POST - SX | |
| 520 | WR E | 125 | 96 | ANT / POST - SX | |
| 520 | WR E | 125 | 97 | ANT / POST - SX | |
| 520 | WR E | 125 | 98 | ANT / POST - SX | |
| 520 | WR | 240 | 90 | ANT / POST - SX | |
| 520 | WR | 240 | 91 | ANT / POST - SX | |
| 520 | TC | 250 | 02 | ANT / POST - SX | |
| 520 | TC | 250 | 03 | ANT / POST - SX | |
| 520 | TC | 250 | 04 | ANT / POST - SX | |
| 520 | TC | 250 | 05 | ANT / POST - SX | |
| 520 | TE | 250 | 02 | ANT / POST - SX | |
| 520 | TE | 250 | 03 | ANT / POST - SX | |
| 520 | TE | 250 | 04 | ANT / POST - SX | |
| 520 | TE | 250 | 05 | ANT / POST - SX | |
| 520 | TE | 250 | 06 | ANT / POST - SX | |
| 520 | TE | 250 | 07 | ANT / POST - SX | |
| 520 | TE | 250 | 08 | ANT / POST - SX | |
| 520 | TE | 250 | 09 | ANT / POST - SX | |
| 520 | TE | 250 | 10 | ANT / POST - SX | |
| 520 | WR | 260 | 90 | ANT / POST - SX | |
| 520 | WR | 260 | 91 | ANT / POST - SX | |
| 520 | TE | 350 | 90 | ANT / POST - SX | |
| 520 | TE | 350 | 91 | ANT / POST - SX | |
| 520 | TE | 350 | 92 | ANT / POST - SX | |
| 520 | TE | 350 | 93 | ANT / POST - SX | |
| 520 | TE | 350 | 94 | ANT / POST - SX | |
| 520 | TE | 350 | 95 | ANT / POST - SX | |
| 520 | WXE-WXC | 350 | 94 | ANT / POST - SX | |
| 520 | CR | 360 | 92 | ANT / POST - SX | |
| 520 | CR | 360 | 93 | ANT / POST - SX | |
| 520 | CR | 360 | 94 | ANT / POST - SX | |
| 520 | WR | 360 | 92 | ANT / POST - SX | |
| 520 | WR | 360 | 93 | ANT / POST - SX | |
| 520 | WR | 360 | 94 | ANT / POST - SX | |
| 520 | WR | 360 | 95 | ANT / POST - SX | |
| 520 | WR | 360 | 96 | ANT / POST - SX | |
| 520 | WR | 360 | 97 | ANT / POST - SX | |
| 520 | WR | 360 | 98 | ANT / POST - SX | |
| 520 | TE | 400 | 01 | ANT / POST - SX | |
| 520 | TE | 400 | 02 | ANT / POST - SX | |
| 520 | TC | 410 | 95 | ANT / POST - SX | |
| 520 | TC | 410 | 96 | ANT / POST - SX | |
| 520 | TC | 410 | 97 | ANT / POST - SX | |
| 520 | TC | 410 | 98 | ANT / POST - SX | |
| 520 | TE | 410 | 95 | ANT / POST - SX | |
| 520 | TE | 410 | 96 | ANT / POST - SX | |
| 520 | TE | 410 | 97 | ANT / POST - SX | |
| 520 | TE | 410 | 98 | ANT / POST - SX | |
| 520 | TE | 410 | 99 | ANT / POST - SX | |
| 520 | TE | 410 | 00 | ANT / POST - SX | |
| 520 | TC | 450 | 02 | ANT / POST - SX | |
| 520 | TC | 450 | 03 | ANT / POST - SX | |
| 520 | TC | 450 | 04 | ANT / POST - SX | |
| 520 | TC | 450 | 05 | ANT / POST - SX | |
| 520 | TC | 450 | 06 | ANT / POST - SX | |
| 520 | TC | 450 | 07 | ANT / POST - SX | |
| 520 | TC | 450 | 08 | ANT / POST - SX | |
| 520 | TC | 450 | 09 | ANT / POST - SX | |
| 520 | TC | 450 | 10 | ANT / POST - SX | |
| 520 | TE | 450 | 02 | ANT / POST - SX | |
| 520 | TE | 450 | 03 | ANT / POST - SX | |
| 520 | TE | 450 | 04 | ANT / POST - SX | |
| 520 | KAWASAKI | KX | 250 | 06 | ANT / POST - SX | |
| 520 | KX | 250 | 07 | ANT / POST - SX | |
| 520 | KTM | GS | 125 | 85 | ANT / POST - SX | |
| 520 | GS | 125 | 86 | ANT / POST - SX | |
| 520 | GS | 125 | 87 | ANT / POST - SX | |
| 520 | GS | 125 | 88 | ANT / POST - SX | |
| 520 | GS | 125 | 89 | ANT / POST - SX | |
| 520 | MX | 125 | 85 | ANT / POST - SX | |
| 520 | GS | 250 | 85 | ANT / POST - SX | |
| 520 | GS | 250 | 90 | ANT / POST - SX | |
| 520 | GS | 250 | 91 | ANT / POST - SX | |
| 520 | GS | 250 | 92 | ANT / POST - SX | |
| 520 | GS | 250 | 93 | ANT / POST - SX | |
| 520 | MX | 250 | 85 | ANT / POST - SX | |
| 520 | MX | 250 | 86 | ANT / POST - SX | |
| 520 | MX | 250 | 87 | ANT / POST - SX | |
| 520 | MX | 250 | 88 | ANT / POST - SX | |
| 520 | MX | 250 | 89 | ANT / POST - SX | |
| 520 | MX | 250 | 91 | ANT / POST - SX | |
| 520 | MX | 250 | 92 | ANT / POST - SX | |
| 520 | SX | 250 | 93 | ANT / POST - SX | |
| 520 | SX | 250 | 94 | ANT / POST - SX | |
| 520 | SX | 250 | 95 | ANT / POST - SX | |
| 520 | SX | 250 | 13 | ANT / POST - SX | |
| 520 | SX | 250 | 14 | ANT / POST - SX | |
| 520 | SX | 250 | 15 | ANT / POST - SX | |
| 520 | SX | 250 | 16 | ANT / POST - SX | |
| 520 | SX-F | 250 | 06 | ANT / POST - SX | |
| 520 | SX-F | 250 | 07 | ANT / POST - SX | |
| 520 | SX-F | 250 | 08 | ANT / POST - SX | |
| 520 | SX-F | 250 | 09 | ANT / POST - SX | |
| 520 | SX-F | 250 | 10 | ANT / POST - SX | |
| 520 | SX-F | 250 | 11 | ANT / POST - SX | |
| 520 | SX-F | 250 | 12 | ANT / POST - SX | |
| 520 | EXC | 300 | 93 | ANT / POST - SX | |
| 520 | EXC | 300 | 94 | ANT / POST - SX | |
| 520 | EXC | 300 | 05 | ANT / POST - SX | |
| 520 | EXC | 300 | 06 | ANT / POST - SX | |
| 520 | EXC | 300 | 07 | ANT / POST - SX | |
| 520 | EXC | 300 | 08 | ANT / POST - SX | |
| 520 | EXC | 300 | 09 | ANT / POST - SX | |
| 520 | EXC | 300 | 10 | ANT / POST - SX | |
| 520 | EXC | 300 | 11 | ANT / POST - SX | |
| 520 | EXC SIX DAYS | 300 | 10 | ANT / POST - SX | |
| 520 | EXC SIX DAYS | 300 | 11 | ANT / POST - SX | |
| 520 | GS | 300 | 94 | ANT / POST - SX | |
| 520 | GS | 350 | 85 | ANT / POST - SX | |
| 520 | GS | 350 | 86 | ANT / POST - SX | |
| 520 | GS | 350 | 87 | ANT / POST - SX | |
| 520 | GS | 350 | 88 | ANT / POST - SX | |
| 520 | GS | 350 | 89 | ANT / POST - SX | |
| 520 | GS | 350 | 90 | ANT / POST - SX | |
| 520 | GS | 350 | 91 | ANT / POST - SX | |
| 520 | GS | 350 | 92 | ANT / POST - SX | |
| 520 | SUZUKI | RM | 125 | 85 | ANT / POST - SX | |
| 520 | RM | 125 | 86 | ANT / POST - SX | |
| 520 | RM | 125 | 87 | ANT / POST - SX | |
| 520 | RM | 250 | 84 | ANT / POST - SX | |
| 520 | RM | 250 | 85 | ANT / POST - SX | |
| 520 | RM | 250 | 86 | ANT / POST - SX | |
| 520 | RM | 250 | 88 | ANT / POST - SX | |
| 520 | RMZ | 450 | 05 | ANT / POST - SX | |
| 520 | RMZ | 450 | 06 | ANT / POST - SX | |
| 520 | RMZ | 450 | 07 | ANT / POST - SX | |
| 520 | YAMAHA | WR | 125 | 91 | ANT / POST - SX | |
| 520 | WR | 125 | 92 | ANT / POST - SX | |
| 520 | WR | 125 | 93 | ANT / POST - SX | |
| 520 | WR | 125 | 94 | ANT / POST - SX | |
| 520 | WR | 125 | 95 | ANT / POST - SX | |
| 520 | WR | 125 | 96 | ANT / POST - SX | |
| 520 | WR | 125 | 99 | ANT / POST - SX | |
| 520 | WR | 125 | 00 | ANT / POST - SX | |
| 520 | YZ | 125 | 89 | ANT / POST - SX | |
| 520 | YZ | 125 | 90 | ANT / POST - SX | |
| 520 | YZ | 125 | 91 | ANT / POST - SX | |
| 520 | YZ | 125 | 92 | ANT / POST - SX | |
| 520 | YZ | 125 | 93 | ANT / POST - SX | |
| 520 | YZ | 125 | 94 | ANT / POST - SX | |
| 520 | YZ | 125 | 95 | ANT / POST - SX | |
| 520 | YZ | 125 | 96 | ANT / POST - SX | |
| 520 | WR R | 200 | 93 | ANT / POST - SX | |
| 520 | WR R | 200 | 94 | ANT / POST - SX | |
| 520 | WR R | 200 | 95 | ANT / POST - SX | |
| 520 | YZ | 250 | 87 | ANT / POST - SX | |
| 520 | YZ | 250 | 88 | ANT / POST - SX | |
| 520 | YZ | 250 | 90 | ANT / POST - SX | |
| 520 | YZ | 250 | 91 | ANT / POST - SX | |
| 520 | YZ | 250 | 92 | ANT / POST - SX | |
| 520 |
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