Sun MTX 26″ Disc Bicycle Wheel Set


At 500g, the Sun SOS is light weight for it’s width and strength.  500g for a rim that eats rock gardens for breakfast is hands down, one of the easiest decisions you’ll have to make when looking at ways to breathe new life in to your trusted steed.

QR Hub Set Options w/135mm Rear MTB HG 8/9/10/11 Spd *

Spoke Options *

Nipples Select *


The Sun MTX bicycle rim is differentiable from a motorcycle rim by only a narrow degree of purpose.  It’s not the lightest bicycle rim in the marketplace, but it will hold up.  It’s design harkens back to the dark days of MTB, when ambitions far exceeded bicycle frame geometry, suspension design, and generally speaking, component capability.  As a stop gap, the MTX offered a simple solution.  Wheels built with them overcompensated to such an extent that the net effect was an increase in the entire bike’s potential.  And when all else failed out on the trail, MTX wheels would still hold true.

Sun MTX 26″ Clincher Specs

26″ Front Wheel Rear Wheel Wheel Weights (approx)
Rim Info  Sun MTX 26″ aluminum alloy clincher
ETRTO 559x26mm (26″)
Weight ≈700g, 26″
Sidewall Disc brake only
Inner Width 25.8mm
Outer Width 33.4mm
Rim Depth 25.4mm
Rim ERD 532 (26″)
Rim Tape Tesa Tubeless Rim Tape Installed ≈ 30 – 35g/wheel (varies based on overlap)
Washers single stainless eyelets N/A
Valve Type Schrader compatible
Tire Type Standard Clincher with inner tube
Tire Volumes 26″ x 2.1″ – 2.6″
Nipple Info (Brass) Sapim 12mm Brass Chrome Plated @ ≈ 1g ea 32H = 32
Nipple Info (Alloy) Sapim Alloy Double Square Polyax @ ≈ .34g ea 32H = 10
Spoke Info Leader Sapim Leader 2.0mm Stainless Spokes Black ≈ 6.5g ea 32H = 208
Spoke Info Race Sapim Race 2.0/1.8/2.0 Butted Stainless Spokes Black ≈ 5.65g ea 32H = 180
Spoke Info Dlight Sapim D-Light TCS 2.0/1.65/2.0 Butted Stainless Spokes Black ≈ 5.16g ea 32H = 165g
Spoke Count Front: 32H Rear: 32H
Spoke Pattern Front: 3 Cross Rear: 3 Cross (32H)
Lengths 29er 254/256mm (32H) 254/256 (32H)
Hub Info (option) Shimano TX-506 Shimano TX-506
Hub Weight 252g 465g 252g F, 465g R
Hub Shell Aluminum Alloy
Axle Info (option) QR 9mm x 100mm OLD QR 10mm x 135mm OLD
Hole Ct 32H 32H
DriveS PCD
61 61
DS Ctr to Flange 21.5 19.5
Non-DriveS PCD 61 61
NDS Ctr to Flange 33 32
Axle Material Steel Alloy
Bearings Loose Ball Bearings
Bearing Size 3/16″ x 10 1/4″ x 9
Freehub HG Shimano/Sram “Splined” MTB 8/9/10/11 Speed + Shimano/SRAM Road 8/9/10 speed
FH Material Steel Alloy

Wheel Weights

(without QR’s or rim tape)

Shimano TX – Leader/Brass F ≈ 1189g R ≈ 1402g Set ≈ 2591g
ST170/ST300 – Race/Alloy F ≈ 1060g R ≈ 1190g Set ≈ 2250g

What Others Are Saying…

The Sun MTX is a stellar wheelset option, in a field that’s composed of some of the best aluminum alloy MTB rims ever.  Given their level of performance, they are an unbeatable deal, (coupon codes here).  We’re not joking around here.  If you don’t have a lot of time to research all the rim options in the marketplace, if you don’t have a lot of money, and if you can find this product page, maybe that’s Magic.

Should you buy this wheelset?  Entirely your call.  Should you watch this short but sweet rock climbing video?  Absolutely.  One More Fun One.

Make That Two.

Wheelset Facts

    • Comes with rim tape installed.
    • The Sun MTX has an 25.8mm inner width, is 25.4mm tall, 33.4mm wide, and weighs about 700g (26″)
    • Recommended for use with 26″ x 2.1″ – 2.6″ tires
    • We do Not use internal washers with these rims, the rims are eyeletted.
    • Wheelset weight will vary with end caps, freehub driver, and nipple selection.  Rim Tape adds approximately 30-35g for the wheelset, on average.

Additional information

Weight 7 lbs
Dimensions 30 × 7 × 26 in


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