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IWE Rear Ends Only
- Engine RPM Chart -

This chart is designed to assist you in selecting your new rear end ratio. These approximate RPM numbers are based on your vehicle in direct drive.
Click here to view as a PDF


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  Road Speed  
60 kph
38 mph		 70 kph
44 mph		 80 kph
50 mph		 90 kph
56 mph		 100 kph
62 mph		 110 kph
69 mph		 120 kph
75 mph		 130 kph
81 mph		 140 kph
87 mph
Gear Ratio   Engine RPM
6.50 :1 2695 3171 3646 4122 4598 4915 5232 5866 6183
6.20 :1 2571 3024 3478 3932 4385 4688 4990 5595 5898
6.00 :1 2488 2927 3366 3805 4244 4537 4826 5415 5707
5.71 :1 368 2785 3203 3621 4039 4317 4596 5153 5431
5.38 :1 2231 2624 3018 3412 3805 4068 4330 4855 5118
5.29 :1 2193 2580 2968 3355 3742 4000 4258 4774 5032
5.14 :1 2131 2507 2883 3260 3636 3886 4137 4639 4889
4.88 :1 2023 2380 2738 3095 3452 3690 3928 4404 4642
4.63 :1 1920 2259 2597 2936 3275 3501 3727 4178 4404
4.56 :1 1891 2224 2558 2892 3225 3448 3670 4115 4338
4.30 :1 1783 2098 2412 2727 3041 3251 3461 3880 4090
4.10 :1 1700 2000 2300 2600 2900 3100 3300 3700 3900
3.91 :1 1621 1907 2193 2480 2766 2956 3147 3529 3719
3.73 :1 1547 1820 2092 2365 2638 2820 3002 3366 3548
3.55 :1 1472 1732 1991 2251 2511 2684 2857 3204 3377
3.42 :1 1418 1668 1919 2169 2419 2586 2753 3086 3253
3.23 :1 1339 1576 1812 2048 2285 2442 2600 2915 3072
3.08 :1 1277 1502 1728 1953 2179 2329 2479 2780 2930
2.94 :1 1219 1434 1649 1864 2080 2223 2366 2653 2797
2.73 :1 1132 1332 1531 1731 1931 2064 2197 2464 2597
2.56 :1 1061 1249 1436 1623 1811 1936 2060 2310 2435
2.41 :1 999 1176 1352 1528 1705 1822 1940 2175 2292
2.26 :1 937 1102 1268 1433 1599 1709 1819 2040 2150