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EB17: SR Suntour boosts RUX & Durolux forks, adds TriAIR piggyback shock & more

2018 SR Suntour mountain bike suspension fork lineup gets Boost axle options and better damping
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If you recall the recent Durolux fork launch and review, you’ll know that it came with a standard 20mm thru axle, which from the outset was 110mm, borrowed from the existing downhill standard. But that’s different than the Boost 110mm axle standard in that the brake mounting location is 5mm further outboard for Boost. So, SR Suntour has updated both their RUX DH fork and the Durolux to use a true Boost-compatible 20mm axle system.

UPDATE: The Durolux 29er goes with a standard 15×110 Boost option only for now, but there’s a 20mm Boost version on the drawing board. The 27.5 Durolux remains a standard 20×110 non-Boost model, as it was when launched.

For riders that have beloved 20mm axle front wheels, they’ll still work, you’ll just need to get a 5mm spacer (MRP makes one) to push your rotor further away from the spokes.

2018 SR Suntour RUX DH mtb fork for downhill mountain bikes gets a true 20mm Boost dropout

The Rux also gets a lighter lower casting…

…and upgrades to their PCS damping cartridge, which gives you more control over compression rebound and better heat and oil management inside. Here’s the nutshell:

SR Suntour PCS damping cartridge tech explained

Check our detailed PCS description in this post.

2018 SR Suntour Durolux boost mtb fork for enduro mountain bikes gets 15mm thru axle option

The 2018 Durolux gets a completely new construction with lighter lowers Both use 36mm stanchions. This is their premium enduro fork, available for 27.5 (20×110) and 29er (15×110 Boost).

2018 SR Suntour Auron boost mtb fork for trail all mountain bikes

The Auron is a step down, for trail riders with dreams of enduro. It, too, updates to Boost axle spacing. Stanchion diameter is 35mm.

2018 SR Suntour Axon boost mtb fork for XC mountain bikes

The Axon fork has been their XC model for years, but now even that gets bigger. Stanchions grow to 34mm for most models, and it gets a new alloy casting for the lower. Travel is bumped up to a max 130mm, making it more trail ready than the old version with 32mm stanchions. You can still get a 32mm stanchion up to 120mm travel for lighter weight XC.

All high end 2018 forks get replaceable fenders, too.

2018 SR Suntour TriAIR rear shock for enduro and downhill mountain bikes

The new TriAir is a piggyback shock that gets standard, metric and trunnion mounts. Service is easy, just slide the o-ring off and pull that air can off. That lets you easily add or remove plastic air volume spacers to tune it to your bike.

2018 SR Suntour TriAIR rear shock for enduro and downhill mountain bikes

It has a 3-mode compression adjust (open, 50% and 80%). Compared to the DuAir, it gets more oil volume to deal with heat better, and gets a new high speed rebound circuit.

Their cranks get same naming scheme as forks, helping everyone understand their hierarchy. The Auron has a full carbon crank and gets direct mount 1x chainrings using MRP’s Wave Technology tooth profile.





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6 years ago

Good to see SR Suntour moving upmarket. Wish the article had pricing info.

6 years ago
Reply to  Tim

+1 on the pricing

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