This past weekend I picked up a used 2018 svartpilen 401, main reason being I moved to a wetter climate and low speed commute so I didn’t want to leave my 701 out in the rain and square off it’s tires constantly. So far the 401 has been a lot of fun to rip around on, however, the biggest issue I have is the front brake feel at lower speeds. I assume it is because the rotor is not floating so it is not making perfect contact with the pads at lower pressures. It is really annoying coming up to a stop light. I assume the only way to fix this is with a floating rotor, has anyone here done the swap? I don’t want to get carried away with mods on the 401 since it’s for commuting.
New 401 owner, Front brake gripe
- Thread starter Actionabe
- Start date
Ayune
fast rider
I installed the Galfer floating wave rotor to solve the pulsating from the stock fixed rotor. Works perfectly.
aomc.mx
Galfer 320mm Front Floating Wave Rotor KTM RC 380 17-18
Check out the deal on Galfer 320mm Front Floating Wave Rotor KTM RC 380 17-18 at AOMC.mx
aomc.mx
Awesome, I’ll order one of those, it’s driving me nuts.I installed the Galfer floating wave rotor to solve the pulsating from the stock fixed rotor. Works perfectly.
Galfer 320mm Front Floating Wave Rotor KTM RC 380 17-18
Check out the deal on Galfer 320mm Front Floating Wave Rotor KTM RC 380 17-18 at AOMC.mx
Vintage Veloce
pro rider
Please post your results with this! I have no pulsation, but am curios of the effect.
Also, please weigh the old rotor and new one if you have a scale handy!
Also, please weigh the old rotor and new one if you have a scale handy!
The front rotor is definitely warped because I raised the front end up and rotated it so I am sure that is contributing, but at least a floating rotor will somewhat compensate when it’s warped. I’ll try to weigh them but all I have is a bathroom scale…
BISavage
champion rider
I had the MotoMaster Flame Rotor, one on each set of wheels for my 401; it is also a floating type.
Also tested out a few different pad types.
In reality though, I felt like changing from regular brake fluid to Motul RBF 660 was the biggest change in brake performance on the 401.
(In contrast, on the 701 I use normal Motul 5.1 and works just fine)
This is what the 401 brakes weighed on my scale:
• 1598g - Brembo Front
• 789g Brembo Rear
• 1251g - Moto-Master Front for Spoke Wheel
• 1306g - Moto-Master Front for Alu Wheel
• 537g - Moto-Master Rear
Also tested out a few different pad types.
In reality though, I felt like changing from regular brake fluid to Motul RBF 660 was the biggest change in brake performance on the 401.
(In contrast, on the 701 I use normal Motul 5.1 and works just fine)
This is what the 401 brakes weighed on my scale:
• 1598g - Brembo Front
• 789g Brembo Rear
• 1251g - Moto-Master Front for Spoke Wheel
• 1306g - Moto-Master Front for Alu Wheel
• 537g - Moto-Master Rear
GeoKrpan
top rider
It must be a defective rotor. I can't imagine it warping from heat. I've had bicycle rotors warp from heat but they're super thin and light, and, they can strike objects on the trail.
