Shock Absorber Type 642 Boxer Cup Suspension Kit
We put our longstanding experiences into this racing-suspension-kit for te R nineT Racer. We set the goal to optimize the setup an geometry for sportive driving. Bastien Mackels, our pilot als Wilbers-BMW-Racing, supported us at it.
The result was remarkable:
- A Type 642 Adjustline suspension strut, which lifts the chassis for 30mm and offers more tilt. It also offers maximum grip and traction in every situation with its more sensible response. The rebound and compression stage is adjustable in 22 clicks, the spring preload via handwheel in a maximum of 15mm.
- The "Wilbers Powered by ZF"-open cartridge-kit also has an adjustable rebound and compression stage, spring preload and is delivered with new chrome fork tubes, while it is possibly to set it up in 24 ways. It comes with an assembly kit and ABE
We deliver our products with an ABE and 5 years warranty.
We guarantee mega handling with huge reserves in spring and damping.
Do it like Bastien Mackels!
Additional Notes:
Compatible vehicles:
- 2017 - 2020 BMW R nineT Racer | 1N12
Pickup available at EPM Performance Imports
Usually ready for pickup or shipment in 3-4 weeks.
Shock Absorber Type 642 Boxer Cup Suspension Kit
Edition: Blackline | Preload Adjuster: Mechanical (X-PA) | Lift/Lowering: +30 mm
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EPM Performance Imports
Pickup available, Usually ready for pickup or shipment in 3-4 weeks.
3 Fedornak Freeway
Unit 1
Whiting NJ 08759
United States+17327869777
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Let customers speak for us
Excellent service, quick turnaround, HAPPY customer!
Great product great communication fast delivery!!!
5 star
Everything I wanted and never knew I needed. Spec’d perfect. Didn’t even have to adjust sag.
100 times better than stock, wife on back says nothing compared to ouch or ugh when we hit a bump
I have spinal stenosis, this was exactly what I was looking for.
huge improvement !
replaced the ktm garbage, which had completely failed and was bouncing and bouncing and bouncing
Excellent service throughout. Thank you!
Fits perfectly
Very high quality
If you have a 40–50 lb rider on a Husqvarna EE 5 (or KTM SX-E 5 / TC 50), swapping out the factory shock spring for this 25 N/mm spring is hands-down the single best suspension upgrade you can make.
The stock rear spring is notoriously oversprung for young kids. Before installing this, our rider was getting bucked over braking bumps, the rear end skittered out in flat turns, and it was physically impossible to dial in correct rider sag—even backed all the way out on the preload collar.
Swapping to the 25 N spring completely transformed the bike's balance:
True Sag Numbers: Finally allowed us to set proper race sag (targeting ~60–65 mm) while still maintaining healthy static free sag.
Chassis Balance: Balances out the front WP air fork so the bike stays level and planted instead of riding stinkbug into turns.
Instant Confidence: The rear wheel actually tracks through acceleration chop and ruts now rather than deflecting. Our rider felt the difference on lap one—much less fatigue and far more control over rough, choppy sections.
Fit and finish (47x130) are spot-on, drop-in replacement with the stock WP shock collars, and the coating holds up to roost and power washing. Don’t waste time fighting the stock spring if your kid is under 55 lbs—this 25 N spring fixes the rear end completely. Highly recommend!
Awesome addition to the 390. The spring had made 2 up riding much more comfortable.
Sterrring damper is amazing! Got rid of all the head shake at high speeds. I only have it 5 clicks in and it's working as it should. The guys at EPM are great. Thanks!
Got shipped out right away
Easy to install
