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Product number: 1000103
Product information "OVAL GUIDE™-ISCG05+BSA"
The Oval Guide is the lightest fully adjustable chain guide for oval chainrings on the market. This version can be mounted on bikes with ISCG 05 tabs and a threaded BSA Bottom Bracket. The chain is held securely in any position on the oval chainring. The CNC milled scale facilitates the adjustment to the chainring size and the adjustment of the chain lines becomes child's play by using a chart and spacers. The front flip technology allows you to remove the chain without tools in case of a breakdown on the trail but also lets you pull the crank out of the bottom bracket during service without having to disassemble the chain guide.


  • 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+BSA (44-44.6 mm diameter / SRAM DUB BSA / Hollowtech II). Not compatible with e13 or Race Face Cinch BSA30 Bottom Brackets (Diameter is too big), you can shorten the supports with the file, of course without guarantee loss.
  • Capacity: 28-34 Oval or 26-36T 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: 17 gram (incl. mounting hardware)


  • Chainguide
  • Chainline Spacer Set
  • 1x Torx 25 SS Hollow Bolts
  • 77designz Sticker
!!! Not compatible with Bionicon and Garbaruk non boost chain rings (30T / 28T / 26T) due to smaller Chain Line !!!
!!! The FREESOLO works only with 1*10 drives if you have a clutch rear derailleur and an narrow / wide chain ring !!!

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October 21, 2018 04:00

I ride it on 3

I ride it on 3 bikes now... is the Best solution for enduro riding

September 28, 2019 04:00

Schnelle Lieferung, Top Produkte!

Schnelle Lieferung, Top Produkte!

March 31, 2019 04:00

Quality product!

Very nicely made piece equipment. Also the setup instructions are one of the best I've ever read. Awesome!