BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | OFFROAD PISTON & PISTON KITS PISTON & PISTON KITS 1370 PISTON KITS (CONT) FITS MODEL SIZE PISTON DIAMETER PART # OEM RING # REPL. RINGS BETA (CONT) 350 RR 4T 11-14 Std. 87.96 mm 0910-6804 - - 350 RR 4T 15-25 Std. 87.96 mm 0910-6805 - - 390 RR 4T 15-25 Std. 87.96 mm 0910-6806 - - 400 RR 4T 10-14 Std. 94.95 mm 0910-6808 - - 430 RR 4T 15-25 Std. 94.96 mm 0910-6811 - - 450 RR 4T 10-14 Std. 94.95 mm 0910-6809 - - 480 RR 4T 15-25 Std. 99.96 mm 0910-6812 - - 498 RR 4T 12-14 Std. 99.95 mm 0910-6813 - - 520 RR 4T 10-11 Std. 99.95 mm 0910-6813 - - GASGAS EC/EX 300 21-24 Std. 71.95 mm 0910-6267 - - Std. 71.96 mm 0910-6268 - - EC/EX/MC 350 21-24 Std. 87.96 mm 0910-6793 - - EX/MC 450F 21-23 Std. 94.95 mm 0910-6794 - EX/MC 450F 24 Std. 94.96 mm 0910-6796 - - EC 500F 24 Std. 94.95 mm 0910-6797 - - HONDA CRF70F 04-12, XR70R 97-03 Std. - 0910-0399 - - 0.02 - 0910-0400 - - 0.04 - 0910-0401 - - CR80R 86-02 Std. 46.95 mm 0910-0913 13121-GBF-841 0912-0161 Std. 46.96 mm 0910-0914 13121-GBF-841 0912-0161 CR85 03-07 Std. 47.45 mm 0910-0020 - - Std. 47.46 mm 0910-0021 - - CR125R 89-91 Std. 53.95 mm PX-4240B 13121-KS6-831 PX-4210R 0.001 53.97 mm PX-4240D 13121-KS6-831 PX-4210R CR125R 92-03 Std. 53.94 mm PX-4260A 13121-KZ4-702 PX-4260R Std. 53.95 mm PX-4260B 13121-KZ4-702 PX-4260R 0.0007 53.96 mm PX-4260C 13121-KZ4-702 PX-4260R 0.001 53.97 mm PX-4260D 13121-KZ4-702 PX-4260R CR125R 04 Std. 53.94 mm 0910-0428 13121-KZ4-702 PX-4260R Std. 53.95 mm 0910-0429 13121-KZ4-702 PX-4260R CR125R 05-06 Std. 53.94 mm 0910-0597 - - Std. 53.95 mm 0910-0598 - - Std. 53.96 mm 0910-0599 - - CRF150R 12-24 Std. 65.98 mm 0910-3252 - 0912-0647 CRF230F 03-19 Std. 65.50 mm 0910-1365 - - 0.5 mm 66.00 mm 0910-1366 - - 1 mm 66.50 mm 0910-1367 - - CR250R 86-96 Std. 66.34 mm PX-4420A 13011-KZ3-306 PX-4420R Std. 66.35 mm PX-4420B 13011-KZ3-306 PX-4420R 0.0008 66.36 mm PX-4420C 13011-KZ3-306 PX-4420R 0.0012 66.37 mm PX-4420D 13011-KZ3-306 PX-4420R CR250R 97-01 Std. 66.34 mm PX-4430A 13011-KZ3-306 PX-4420R Std. 66.35 mm PX-4430B 13011-KZ3-306 PX-4420R Std. 66.36 mm PX4430C 13011-KZ3-306 PX-4420R Std. 66.37 mm PX4430D 13011-KZ3-306 PX-4420R CR250R 02-04 Std. 66.34 mm PX1322A 13011-KZ3-306 PX-4420R Std. 66.35 mm PX1322B 13011-KZ3-306 PX-4420R Std. 66.36 mm PX1322C 13011-KZ3-306 PX-4420R CR250R 05-07 Std. 66.34 mm 0910-1187 - - Std. 66.35 mm 0910-1188 - - CRF250R 04-09 Std. 77.97 mm 0910-1126 - - Std. 77.98 mm 0910-1127 - - Std. 77.99 mm 0910-1128 - - CRF250R 04-09 (high compression) Std. 77.97 mm 0910-1129 - - Std. 77.98 mm 0910-1130 - - CRF250R 10-13 Std. 76.77 mm 0903-0815 - - Std. 76.78 mm 0903-0816 - - CRF250R 14-15 Std. 76.77 mm 0910-4533 - 0912-0648 Std. 76.79 mm 0910-4535 - 0912-0648 CRF250R 16-17 Std. 76.78 mm 0910-4537 - 0912-0648 CRF250R/RX 20-25 Std. 78.97 mm 0910-6779 - - CRF250X 04-17 Std. 77.97 mm 0910-1126 - - Std. 77.98 mm 0910-1127 - - Std. 77.99 mm 0910-1128 - - CRF250X 04-17 (high compression) Std. 77.97 mm 0910-1129 - - Std. 77.98 mm 0910-1130 - -
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