LC4 Performance Parts

KTM 690 SMC R Power Package: Stage 3 Big Air Intake (8") + Empire Exhaust + PC6 + Custom Map

The exact parts behind our KTM 690 SMC R dyno run: 60.05 → 81.76 rear-wheel hp on VP Racing MR12 race fuel (78.15 hp on pump gas).

KTM 690 Pump-Gas Package: Big Air Intake (8") + Honey Badger Downpipe + PC6 + Custom Map

The parts behind our pump-gas KTM 690 build: 60.05 → 81.65 rear-wheel hp on pump gas.

JB Performance Stage 3 Big Air Intake (8")

Our largest LC4 intake: the 8" Big Air version of the Stage 3 design for the 2017–2025 KTM 690, Husqvarna 701 and GasGas 700.

JB Performance Stage 3 Standard Intake (5"), K&N Filter

Dyno-developed 5" high-flow intake with a K&N filter for the 2017–2025 KTM 690, Husqvarna 701 and GasGas 700.

~3 lb vs stock

JB Performance Stage 3 Standard Intake (5"), Uni Filter

The same 5" Stage 3 Standard Intake with a Uni two-stage foam filter: ideal for dusty enduro and off-road riding.

~3 lb vs stock

JB Performance Intake: 2026–2027 KTM 690 SMC R / Husqvarna 701

Our new-generation standard (5") intake for the 2026–2027 KTM 690 SMC R and Husqvarna 701.

JB Performance Insulating Intake Tray

An insulating tray that keeps engine heat away from your intake, so power holds steady run after run.

Honey Badger Downpipe

JB Performance’s own high-flow downpipe for the KTM 690, Husqvarna 701 and GasGas 700.

Dynojet Power Commander 6 (PC6)

The Dynojet Power Commander 6 fuel injection module used in our dyno-proven packages. Pair it with a JB custom PC6 map.

Custom Power Commander 6 (PC6) Map

A custom Dynojet PC6 fuel map built for your exact intake, exhaust and fuel.

Dyno Tuning

In-shop dyno time in Stevens Point: baseline pull, tuning and a verification run with before/after charts.

ECU Reflash (Mail-In)

Send us your ECU and we flash a map matched to your intake and exhaust, developed on our in-house dyno.

Cylinder Head Porting (LC4)

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

Throttle Body Boring (LC4)

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

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.