What do the different sizes mean, like 90mm? Is it a measurement on the bike I need to take? How do I know which size to order for my bike?

It is the length of the stem, center to center. Measure your current stem from center of steering tube to center of (diameter of) handlebar. The longer the stem, the longer the reach. A small change can make a big difference in comfort level. Measure carefully. This is a very nice suspension stem. It takes vibration away from hands.

Is there a sku for ordering one with shims on amazon? my handlebars are 1" (25.4mm)

Shims from Amazon https://www.amazon.com/MUQZI-Handlebar-Aluminum-Bicycle-Conversion/dp/B09BQB9PC1/ref=pd_bxgy_sccl_1/144-7925088-0949638?pd_rd_w=x1LpD&content-id=amzn1.sym.26a5c67f-1a30-486b-bb90-b523ad38d5a0&pf_rd_p=26a5c67f-1a30-486b-bb90-b523ad38d5a0&pf_rd_r=WVEC5RMXZ7MATFBA233V&pd_rd_wg=HciQV&pd_rd_r=d2e06161-e947-4344-b136-a5d96558c876&pd_rd_i=B09BQB9PC1&psc=1

frist of all will this fit a domane alr 31.8 handle bars also do not understand the measurements 6×100 mm

Yes, it will fit. I just installed mine on my Domane SL5. 6 = is the angle of the stem, either 6 degrees rise or 6 degrees lower depending on the way it's installed. 100 = is the length of the stem, from center of steerer tube to center of handlebars.

will this fit my 3 week old Aventon Soltera step though 7 speed ? Thank you

It fits all standard mtb/road/gravel stems, have no idea what size stem your bikes stem takes, sorry.

Redshift Shockstop Suspension Stem For Bicycles Shock Absorbing Bike Handlebar

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🚴‍♀️ Elevate your ride—comfort meets control in every pedal stroke!

CUSTOMIZE YOUR COMFORT - Five swappable elastomers let you fine-tune suspension stiffness to match your ride style.
RIDE SMOOTH RIDE STRONG - Up to 70% bump and vibration reduction for all-day comfort and control.
PLUG PLAY COMPATIBILITY - Fits standard 1-⅛ inch steerer tubes and 31.8mm handlebars for easy installation and maintenance-free use.
ENERGY SAVER MODE ACTIVATED - Reduce fatigue by letting the stem absorb shocks, boosting your cycling efficiency.
PRECISION SUSPENSION TRAVEL - 20mm vertical compliance balances comfort without sacrificing stability or steering precision.

The REDSHIFT ShockStop Suspension Stem is a high-performance aluminum bike stem designed to reduce up to 70% of bumps and vibrations, featuring 20mm of vertical suspension travel and five tunable elastomers for personalized comfort. Compatible with standard 1-⅛ inch steerer tubes and 31.8mm handlebars, it enhances road, gravel, hybrid, and e-bike rides by minimizing fatigue and maximizing control without compromising stability.

Specifications

ASIN	B01MU2HUWW
Amazon 売れ筋ランキング	スポーツ＆アウトドア - 75,825位 ( スポーツ＆アウトドアの売れ筋ランキングを見る ) 自転車用ステム - 78位
Amazon.co.jp での取り扱い開始日	2017/2/8
おすすめ度	4.6 5つ星のうち4.6 (1,386) var
サイズ	Length: 110mm
性別対象	ユニセックス
素材	アルミニウム
色	ブラック
製品サイズ	50 x 50 x 28 cm; 285.76 g
製品型番	Redshift Sports
電池付属または内蔵	いいえ

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REDSHIFT ShockStop Suspension Stem for Bicycles, Shock-Absorbing Bike Handlebar Stem for Road, Gravel, Hybrid, and E-Bikes,

Description

Specifications

Common Questions