Be aware that dynos, dyno operators, conditions and bikes can vary 3-4 hp, so this should only be used as a reference. Note: the same ZRX-1200 was used for all Dale's developement work and testing.

Dyno numbers on Dale's Dynojet dyno with Win Pep program
Bone stock	ZRX-12 Holeshot Slip-on, Dale's Stage 1 jetting and airbox mod	ZRX-12 Holeshot Slip-on, Dale's Stage 2 jetting kit with K&N filters	ZRX-12 Holeshot Header system, Dale's Stage 2 jetting kit with K&N filters
rpm power torque 2750 34.5 66.0 3000 39.4 69.0 3250 44.1 71.3 3500 48.8 73.3 3750 52.8 74.0 4000 56.4 74.0 4250 59.3 73.2 4500 61.7 72.0 4750 65.1 71.9 5000 69.5 73.0 5250 74.5 74.5 5500 77.3 73.8 5750 83.7 76.5 6000 88.7 77.6 6250 92.4 77.6 6500 98.6 79.7 6750 102.1 80.2 7000 105.6 79.2 7250 106.2 76.9 7500 107.9 75.6 7750 108.9 73.8 8000 109.2 71.7 8250 109.0 69.4 8500 111.2 68.1 8750 108.2 65.0 9000 107.4 62.7 9250 104.2 59.2 9500 105.4 58.3 9750 100.8 54.3 10,000 98.8 51.9 10,250 95.6 49.0 It's all over.	rpm power torque 2750 37.0 70.7 3000 40.6 71.1 3250 45.6 73.7 3500 49.7 74.5 3750 53.5 75.0 4000 56.8 74.6 4250 60.2 74.3 4500 63.6 74.2 4750 67.7 74.8 5000 71.6 75.2 5250 75.3 75.4 5500 80.5 76.8 5750 85.4 78.8 6000 91.6 80.2 6250 96.4 81.0 6500 101.4 82.2 6750 103.6 80.6 7000 107.5 80.7 7250 107.7 78.0 7500 110.0 76.9 7750 111.3 75.4 8000 112.8 73.8 8250 113.6 72.3 8500 115.4 70.9 8750 114.0 68.4 9000 111.4 65.0 9250 109.6 62.2 9500 107.9 59.7 9750 105.8 57.0 10,000 104.7 55.0 10,250 100.2 51.4 It's all over.	rpm power torque 2750 38.5 73.5 3000 43.0 75.3 3250 47.2 76.3 3500 50.9 76.5 3750 54.3 76.0 4000 57.7 75.8 4250 60.6 74.9 4500 64.8 75.6 4750 69.2 76.5 5000 74.5 78.3 5250 78.0 78.0 5500 82.2 78.7 5750 86.7 79.2 6000 93.0 81.4 6250 99.0 83.2 6500 102.7 84.1 6750 105.7 82.2 7000 109.4 82.1 7250 111.9 81.1 7500 114.5 80.2 7750 115.1 77.9 8000 116.0 76.2 8250 118.7 75.6 8500 118.7 73.3 8750 122.4 72.4 9000 118.9 69.4 9250 118.5 67.3 9500 116.7 64.5 9750 115.6 62.3 10,000 114.0 59.7 10,250 114.6 58.7 It's all over.	rpm power torque 2750 34.9 66.0 3000 40.1 69.2 3250 45.1 73.8 3500 50.5 75.7 3750 55.2 77.3 4000 59.3 77.9 4250 63.4 78.3 4500 67.2 78.4 4750 69.9 77.3 5000 74.6 78.2 5250 77.9 78.0 5500 81.9 78.2 5750 87.7 80.1 6000 95.7 83.8 6250 101.0 84.9 6500 104.3 84.3 6750 108.0 84.0 7000 113.4 85.6 7250 116.9 84.7 7500 121.0 84.7 7750 120.9 81.7 8000 123.1 80.8 8250 125.1 79.6 8500 127.5 78.8 8750 127.9 76.7 9000 130.2 75.9 9250 128.4 72.9 9500 126.6 70.0 9750 127.0 68.4 10,000 125.1 65.7 10,250 122.5 62.8 It's all over.