Pay in installments of $5.71 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
woom fahrrad 4 Woom Original 4 microSHIFT 20" Bike — PlaytriThe woom 4 introduces children aged six years to the world of gear shifting. The bike's seven speeds in combination with the easy to operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills the new found freedom of gears makes longer adventures on two wheels child's play. An innovative and ultralight 20" children's bike with 7 gears designed for all round
The woom 4 introduces children aged six years to the world of gear-shifting. The bike's seven speeds in combination with the easy-to-operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills – the new-found freedom of gears makes longer adventures on two wheels child's play.
An innovative and ultralight 20" children's bike with 7 gears designed for all-round use by children aged 6 years and over.
Age: 6 - 8 years
Height: 45 - 50″
Frame
- Made from light, high-quality AA 6061 aluminum material
- Geometrically designed with 20” wheels with agile and easy handling in mind
- Low entry, lower sitting position, and forgiving steering geometry provide control and comfort
- LEGGIE Kickstand pre-installed
Wheels
- Ultralight SOOPA DOOPA HOOPS aluminum rims
- Aluminum hubs with sealed bearings and mounts for woom click-on fenders
- Quick-release skewers for easy installation and removal
- 20 lightweight, stainless-steel spokes, double-crossed spoking
Tires
- 20 x 1.4″ Schwalbe Little Joe folding tires – woom edition
- High-quality, light tires for low rolling resistance and maximum grip
- Schrader (car-type) valves
- Reflective striping on tire sidewall for optimal visibility even in low-light conditions
Stem
- Lightweight stem made out of forged aluminum
- Adjustable height and reach mean the stem can be adjusted for optimal riding position as the child grows.
- Handlebars attached via two clamps and fixed with two 5 mm hex bolts
- Integrated headset bolt allows for easy compression adjustment
Handlebars
- Wide, ergonomically adapted, light aluminum bars offer more control
- Sandblasted and black anodized
- Width: 54 cm
Grips
- woom Ergogrip – designed specifically for kid’s hands
- Ergonomically formed gripping surface, non-toxic
- Handlebar ends with extra-large diameter for greater protection
- Screw-in grips ensure secure attachment to handlebars
Drive
- Lightweight, forged 4.3" (110 mm) aluminum cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth
- Cassette with 11-28 teeth
- Narrow, flat platform plastic pedals
- Sealed cartridge
Gears
- 7 speeds
- microSHIFT MS29 twist shifter
- microSHIFT M21SS rear derailleur
Fork
- Light unicrown fork made out of aluminum
- 1″ shaft
- Generous trail angle for easy handling
Headset
- Fully integrated 1″ headset
- Sealed industrial bearings
- Integrated ahead clamp
Seat
- Ergonomically designed to fit children's pelvis
- Non-toxic
- Side protection to lean against walls
Seatpost
- Anodized aluminum seatpost
- Minimum insertion point marked, plus integrated guide in seat tube
Seatpost clamp
- Secure aluminum seatpost clamp eliminates risk of turning/twisting
- Extra-long quick-release skewer makes it easier for kids to release and close
Brakes
- Two independently operated V-brakes with braking power adapted for children
- Brake levers are ergonomically adapted, reach-adjustable, and suitable for kid’s hands
- High-quality Jagwire cables provide reduced friction and smooth performance
Enclosed tools
- 15 mm spanner for pedals
- 5 mm hex key for stem
Weight
- 7.7 kg / 16.9 lbs (without pedals)
Weight limit
- 155 lbs (70 kg)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 21 reviews
Sort
Product Reviews
★★★★★ 4
Great product
Quick delivery.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Use as directed, when needed, and you'll be good to go.
A must have if you have a need for a ZDDP additive. This won't fix your worn valve seats, leaking piston rings, seasonal depression or gout but it will improve the lubricating properties of a quality oil in a properly maintained motor for your longevity goals.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
★★★★★ 5
Every oil change for bikes
I use this in my bike every oil change
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
★★★★★ 5
Buddy filled diesel skid steer with automotive gas engine oil. Used this to help.
We all know that guy who will buy a $65,000 machine and then only service it once a year with the cheapest oil on the shelf from Rural King or some other place with ultra cheap, home branded, questionably quality oil. Yep. That is my good buddy.
So I go to the shop a couple weeks back and he is re-filling the skid steer engine with some ultra cheap, totally not to spec, gas engine oil. I question him and he states that it is perfect oil for the machine being 5W-30. I ask him if it meets the SAE ratings for the diesel, he repeats back that yep... it is 5W-30. So I go grab his New Holland book (C232 track skid steer) and look up the oil requirements, then I look at this junk oil, and I try to explain to him the SAE designations on the back of the bottle and the SAE requirements in the book. He looks at me like I have 3 heads and repeats that it is 5W-30, it is totally good. Someone.... kill me please! He has no clue what I am trying to explain.
So I couldn't sleep knowing what he is doing, and I ran to Amazon to see if I can at least get zinc to add to the wrong oil and try to help the cam followers and rockers survive this next year. I found this. I ordered a few bottles and had them shipped to his shop, and I explained to him that these need to be dumped in to at least make an attempt in not prematurely wear the engine that likely is worth $20,000 or more!
So the real question is, will he actually dump these into the machine, or will he toss them on a shelf never to be seen again? We may never know. But I bet next winter he will once again shop for the cheapest oil on earth to put in a machine that costs as much as some peoples home. He is who he is, you can never change that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2023
★★★★★ 5
Works good for my old tractor
Put it in my old 1953 Ford Golden Jubilee
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
recommand products
KINGCAMP Duschzelt Marasusa II Camping Umkleidezelt WC Toiletten Zelt
25.12
Sekey Pavillon 3x3 m mit LED-Beleuchtung – Wasserdicht, Winterfest & S – sekeymall
22.59
Campingzelt Pop-Up Zelt 3-4 Personen Kuppelzelt doppelwandig wasserdic – clever-outdoor.de
24.76
Wetterfestes und extra leichtes Pop up Familienzelt für 3 Personen
20.15
3m Rundzelt 285gsm 100% natürliches Segeltuch
24.75