Important note: Due to Corona, bottlenecks and delays are currently occurring both on the procurement side and in logistics, over which we unfortunately have little influence. We ask all customers for understanding and a little patience in this regard.

...if you tell us your preferred tuning system and your delivery adress

via Email to info@crawlster.dwe can also simply send you a PayPal request 

for comfortable and secure payment !

crawlster®R1 Steering system – for Gmade® R1 RockBuggy

 crawlster®R1 – the unique Steering system for all portal-axles of the Gmade® R1

  • Fits all Gmade  Plastic-/Alu C-Hubs (#GM51103s) and  Degree Alu C-Hubs (#GM51121s) 
  • HD-Carbon – low weight = low center-of-gravity (LCG)
  • Fixes negative steering angles and improves the steering geometry / performance by positive Ackerman-effect
  • Maneuverability and off-road ability are clearly optimized
  • optimized banking angle
  • easy mounting to Gmade® Plastic- (#51105) / Aluminium-Knuckles (#GM51105S) or GPM® Alu Knuckles (for Tamiya High-Lift / Gmade®R1)
  • TUNING-KIT incl. 1x crawlster®R1 steering bracket, 2x steering arm, 2x RodEnds and accessories for mounting
  • 2x crawlster®TUNING-Sticker – detaillied mounting instructions
  • compatible with Gmade® R1 RockBuggy KIT (GM51000, GM51001, GM51004), RTR (GM51011) und StealthV2 (GM30058)
  • recommended: Tuning CVDs* (front) for maximum steering angle

49,80 €

  • SOFORT-VERSAND am Bestelltag - Mo.-Fr. bei Bestellung bis 15 Uhr1

Price notice for European 

and International orders:

orders from/to EU countries will be charged including MwSt/VAT +shipping € 6,20

INTERNATIONAL orders (outside EU) will be charged w/o MwSt/VAT + FREE SHIPPING

Accessories (option)

(2) CVDs* Stahl für Gmade R1 RockBuggy, 27 mm, sc
Front-Antriebswellen mit CVD* Gleichlaufgelenk  (Constant Velocity Driveshaft) 
36,80 € 3

crawlster®R1– the unique Steering system for Gmade® R1 RockBuggy

Das crawlster®BTALenkSystem ist Made in Germany
Abbildung/Skizze: negativer Spurdifferenz-Winkel


with conventional steering rod

= Negative Ackerman effect

Abbildung/Skizze: crawlster®BTA an Hi-clearance Achsschenkeln + Universal Joint Axle Shaft = positiver Ackermann-Effekt

Steering with crawlster®R1 Steering system 

on Gmade® Plastic- or Alu-/Tuning-Knuckles 

= Positive Ackerman-Effect

The turning angle of the knuckles in the C-hub is limited in one direction (A = curve outer wheel)In the other direction (B = curve inner wheel) however, the knuckles in the C-hub have a substantially greater angle of freedomperfect conditions for a positive Ackermann steering geometry.

The knuckles of the Gmade® R1 portal axle have a standard "inwardly" directed knuckle linking point. The crawlster®R1 Steering system shifts the knuckle pivot points (O) clearly "outside" of the C-hub pivot points (O) – that means as far as possible "outward" toward the rim.

crawlster®BTA Button STEERING

Optimized steering geometry and dramatically improved off-road maneuverability

  • Positive Ackerman steering geometry with Gmade® Standard- and Tuning-Knuckles
  • Fixes negative steering angles – now the inner wheel steers more than the outer wheel
crawlster®BTA Button SIMPLY

The crawlster®R1 Steering system can easily be installed by anyone

  • Easy assembly with Gmade® Standard- and Tuning-Knuckles
  • No complicated reconstruction necessary
  • The centre of gravity does not get raised
crawlster®BTA Button PERFECT

Totally new driving experience – plus the ultimate in looks

  • Optimized banking angle – less snagging on the ground
  • Immediate & dramatic improvement of steering geometry / performance

crawlster®R1 LenkSystem: volle Kompatibilität für alle entsprechenden C-Hub Carrier und Knuckles:

Gmade Standard Kunstoff-Knuckles
# GM51105

Gmade ALU Tuning-Knuckles
# GM51105S
GPM ALU Lenkhebel
für Tamiya High-Lift / GMade R1 / Sawback
# GRSW021S

Gmade C-Hub Carrier (Stock = 0° Degree)
Kunststoff # GM51103
Alu # GM52120S
Gmade ALU C-Hub Carrier 7° Degree
# GM51121 S


(Alle benötigten Teile im Kit zusätzlich enthalten)


Adobe Acrobat Dokument 1.2 MB

crawlster®R1 Steering system: maximum performance for the Gmade® R1 RockBuggy

*CVD = Constant Velocity Driveshaft

Questions or suggestions? – please free to contact us – mail to


The crawlster®R1 steering system is suitable for all series front portal axles of Gmade R1 vehicles. 

crawlster® is DPMA protected. Subject to technical change. All rights reserved. Reproduction / distribution even in part only with express permission. The vehicle shown on this site is not part of the crawlster®R1 steering system and must be purchased separately.


© Visuals: crawlster®

This website has been compiled with the utmost care. Nevertheless, no guarantee can be given for the correctness of the information contained. Any liability for damages arising directly or indirectly from the use of this website or the vehicles / systems offered is excluded - unless they are based on intent or gross negligence.