FMF - KTM Gnarly Expansion Chamber
KTM PowerParts – FMF Gnarly Expansion Chamber
Built for riders who live in the low-end torque zone, the FMF Gnarly Expansion Chamber transforms your 2-stroke into a torque monster. Designed in collaboration with KTM PowerParts for perfect fitment and performance, this pipe delivers that deep, 4-stroke-like grunt that pulls hard out of corners, climbs, and technical sections. Whether you’re threading through roots, clawing up rocky hills, or lugging through deep mud, the Gnarly’s tuned shape helps your bike hook up and drive instead of spin and stall.
Constructed from extra-strong sheet steel with a nickel-plated finish, it’s built to shrug off rocks, branches, and impacts that would destroy a lesser pipe. The design focuses on improving bottom to mid-range power while maintaining smooth, controllable delivery — ideal for off-road and enduro riders who depend on traction and torque more than top-end scream. Pair it with an FMF silencer for the ultimate KTM setup, combining durability, tone, and performance in one proven system.
Why We Like It:
It’s one of those pipes that completely changes how the bike feels in tight, technical terrain. The power hits earlier and smoother, giving you better control when traction matters most. The build quality is pure FMF — tough, clean, and built to take abuse. It’s a true “ride-anywhere” setup that makes your KTM dig in and keep pulling when the trail gets ugly.
Why It’ll Work for You:
If you ride off-road or enduro and need more low-end torque from your KTM, this pipe delivers. The Gnarly’s design helps you stay in control at lower RPMs, letting you tractor through slow, technical sections without stalling or clutch abuse. The stronger steel body resists dents and damage, while the nickel-plated surface keeps it looking sharp even after a few hard rides. It’s the go-to choice for riders who want smooth power, better traction, and long-lasting durability on every ride.
Key Features:
• Tuned for increased low-end torque and bottom-to-mid power
• Extra-strong sheet steel construction for durability
• Nickel-plated surface for corrosion resistance
• Designed for off-road and enduro use
• Provides fuller, smoother sound
• Ideal when paired with an FMF silencer for optimal performance
Original: $269.99
-70%$269.99
$81.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
KTM PowerParts – FMF Gnarly Expansion Chamber
Built for riders who live in the low-end torque zone, the FMF Gnarly Expansion Chamber transforms your 2-stroke into a torque monster. Designed in collaboration with KTM PowerParts for perfect fitment and performance, this pipe delivers that deep, 4-stroke-like grunt that pulls hard out of corners, climbs, and technical sections. Whether you’re threading through roots, clawing up rocky hills, or lugging through deep mud, the Gnarly’s tuned shape helps your bike hook up and drive instead of spin and stall.
Constructed from extra-strong sheet steel with a nickel-plated finish, it’s built to shrug off rocks, branches, and impacts that would destroy a lesser pipe. The design focuses on improving bottom to mid-range power while maintaining smooth, controllable delivery — ideal for off-road and enduro riders who depend on traction and torque more than top-end scream. Pair it with an FMF silencer for the ultimate KTM setup, combining durability, tone, and performance in one proven system.
Why We Like It:
It’s one of those pipes that completely changes how the bike feels in tight, technical terrain. The power hits earlier and smoother, giving you better control when traction matters most. The build quality is pure FMF — tough, clean, and built to take abuse. It’s a true “ride-anywhere” setup that makes your KTM dig in and keep pulling when the trail gets ugly.
Why It’ll Work for You:
If you ride off-road or enduro and need more low-end torque from your KTM, this pipe delivers. The Gnarly’s design helps you stay in control at lower RPMs, letting you tractor through slow, technical sections without stalling or clutch abuse. The stronger steel body resists dents and damage, while the nickel-plated surface keeps it looking sharp even after a few hard rides. It’s the go-to choice for riders who want smooth power, better traction, and long-lasting durability on every ride.
Key Features:
• Tuned for increased low-end torque and bottom-to-mid power
• Extra-strong sheet steel construction for durability
• Nickel-plated surface for corrosion resistance
• Designed for off-road and enduro use
• Provides fuller, smoother sound
• Ideal when paired with an FMF silencer for optimal performance
