A genuine e*thirteen replacement axle and bearing kit for Gen 3 SL Boost 148 rear hubs, for rebuilding a worn or play-prone hub rather than replacing the whole wheel.

Fits e*thirteen Gen 3 SL rear hubs, Boost 148 x 12mm spacing only, hub versions V30 through V35 (2019-current). SL hubs appear across e*thirteen's TRS and LG1 wheel tiers, and on 2021-and-newer base and plus-level e*spec wheels. The kit supplies both the alloy and steel axle options, reducer, bearings, shims and endcaps; the freehub body and hub shell are sold separately. Hub axle kits are version-specific, so confirm your hub is a Gen 3 SL V30–V35 shell before ordering — e*thirteen's support site has hub identification guides, or Tune's workshop can check your wheel and fit the kit.

Compatibility & fit

Gen 3 SL Boost 148 x 12mm rear hubs, versions V30–V35 only. Not compatible with Gen 2 hubs or non-Boost spacing — see e*thirteen's Gen 2 kits (ETS-HBS20-101, ETS-HBS20-104) for those.

e*thirteen's general component warranty covers this axle kit for 10 years against manufacturing and material defects. For warranty support, return the product to Tune Cycles and we'll manage the claim with e*thirteen's Australian distributor. This is in addition to your rights under the Australian Consumer Law. Keep your proof of purchase.
  • Fits e*thirteen Gen 3 SL Boost 148 x 12mm rear hubs, V30–V35
  • Includes alloy and steel axles, reducer, bearings, shims and endcaps
  • Freehub body and hub shell sold separately
Brande*thirteen
ModelGen 3 SL Hub Axle
FitsGen 3 SL Boost 148 x 12mm rear hubs, V30–V35
IncludesAlloy axle, steel axle, reducer, bearings, shims, endcaps
Not includedFreehub body, hub shell
SKU DTW-ETS-HBHBS30-106
Barcode # 4710751509221
Brand e*Thirteen