Available in 45 days, delivery time 1-3 Business Days in Germany

Product number: 1000104
Product information "OVAL GUIDE™-ISCG05-38"
Since oval chainrings are very trendy for many of you, we offer our Oval Guide the lightest fully adjustable chain guide on the market. The assembly is done in no time and without disassembling the crank. The chain is held securely in any position on the oval chainring. The CNC milled scale makes it easy to adjust to the chainring size and the adjustment of the chain lines is a breeze with the help of a table and spacers. The front flip technology allows you to remove the chain without tools in case of a breakdown on the trail, or pull the crank out of the bottom bracket during service without having to disassemble the chain guide. The versions marked with the 38 have a chainring adjustment range of 26-38 teeth covers.


  • Install without crank removal
  • Torx 25 only single tool installation
  • Boost compatible
  • Incredible Light
  • Front Flip Technologie for tool free service
  • Open cage for better mud release
  • Made in Germany


Mount: ISCG 05
Capacity: 28-36 Oval or 26-38T Round
Chainline: 48-53 mm (Boost Ready)
Compatibility: 1x10, 1x11 or 1x12 drivetrain
Backplate: AL 7075 T6 Black Anodized
Slider: PA66 GF 10 (Front Flip Technology)
Hardware: Torx 25 Hollow Bolts
Weight: 23,1 gram (incl. mounting hardware)


Chainline Spacer Set
2x M6x11 Hollow Bolts
77designz Sticker

Installation with Crash Plate:

To mount our ISCG 05 models with the Crash Plate you need the Connector


!!! Not compatible with Bionicon and Garbaruk non boost chain rings (30T / 28T / 26T) due to smaller Chain Line !!!
!!! The FREESOLO works also with 1*10 drives if you have a clutch rear derailleur and an narrow / wide chain ring !!!

10 of 17 reviews

4.82 out of 5 stars






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April 22, 2018 05:00

Oval Guide and Oval Chainring

It's of good quality! And have helped in the trails! @77Designz always producing the best products! Thank you!:clap::skin-tone-2::ok_hand::skin-tone-2:

November 25, 2017 04:00

Top Wahre! Schneller Versand!

Top Wahre! Schneller Versand!

December 8, 2016 04:00

Crash Plate

The best one in the market. Top products. High recommended. Keep the good work

November 1, 2017 04:00

Perfecto con un plato Garbaruk Round 26t en unas bielas RaceFace Cinch

Ligerísimo y facil de montar y ajustar. Acabados excelentes y sin ruidos ni roces

June 26, 2019 05:00

Einfache Installation, läuft super auf

Einfache Installation, läuft super auf nem runden 32er Kettenblatt mit ner Sram GX Eagle.

October 19, 2017 05:00

Light and easy

Light and easy to mount. Does what it’s designed to do without any problems. Fast shipping.

November 28, 2018 04:00


Super leicht - top verarbeitet :+1:

January 1, 2020 04:00

Sieht gut aus,ist super leicht und funktioniert wunderbar

Bin begeistert von der Kettenführung! Leicht zu montieren und fällt kaum auf! Klare Kaufempfehlung

November 14, 2018 04:00

Best Products and great service

Been using 77designz for 3 years and the products are awesome. Great quality and very well design. The new 35 stem is piece of art.Thanks

October 6, 2017 05:00

Oval Guide mit Taco Bashguard

Super Verarbeitung, 1a Funktion, einfach nur perfekt. :thumbsup::thumbsup: