JB Performance
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KTM 690 · Gen 3 (work in progress)

KTM 690: 82.83 hp on Pump Gas with a Bored Throttle Body & Mild Porting

Baseline HP

0.0

Final HP

0.0

HP Gain

+0.0

Torque Gain (lb-ft)

+0.0

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  • Throttle Body Boring (LC4)

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    Throttle Body Boring (LC4)

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  • Cylinder Head Porting (LC4)

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    Cylinder Head Porting (LC4)

    From $450.00

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  • Engine Services: Big Bore, Stroker, Porting & Throttle Body Boring

    Engine Services

    Engine Services: Big Bore, Stroker, Porting & Throttle Body Boring

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Dyno sheet for KTM 690: 82.83 hp on Pump Gas with a Bored Throttle Body & Mild Porting Full size
Original dyno sheet: KTM 690: 82.83 hp on Pump Gas with a Bored Throttle Body & Mild Porting. Click to open full size.

Rear-wheel figures. Dyno numbers vary with dyno type, correction factor, weather and bike condition.

Parts List

  • JB Performance intake
  • JB Performance downpipe
  • Dynojet Power Commander 6 tuned on 91 pump gas
  • Bored stock throttle body
  • Mild porting
  • Stock cam, valves, piston and valve springs

Fuel: 91 octane pump gas

Dyno: Rear-wheel horsepower and torque against a stock Gen 3 baseline, from our in-house dyno (WinPEP 7). The middle run is the downpipe build before the throttle body and head work (81.65 hp). Tuning stopped when the muffler blew apart. A custom cam is in development. Peak figures are read from the dyno sheet legend, and the chart curves are traced from the original sheet shown on this page.

Build Notes

82.83 hp on 91 octane pump gas, and we are not finished. This Gen 3 KTM 690 runs our intake and downpipe, a PC6 tuned on pump gas, a bored stock throttle body and mild porting, while the cam, valves, piston and valve springs are all still stock. The muffler blew apart before tuning was complete, and we believe there is more to find. A custom cam is in the works.

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Parts Used in This Build

Engine Services: Big Bore, Stroker, Porting & Throttle Body BoringEngine Services

Engine Services: Big Bore, Stroker, Porting & Throttle Body Boring

Custom engine work from a builder with decades of experience: big-bore and stroker packages, porting and throttle-body boring.

Contact for Pricing
Throttle Body Boring (LC4)Engine Services

Throttle Body Boring (LC4)

We bore the LC4 throttle body to a true 50 mm.

From $125.00
Cylinder Head Porting (LC4)Engine Services

Cylinder Head Porting (LC4)

Cylinder-head porting for the LC4, quoted for your build.

From $450.00

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