Ultracycle Boulderdash 29 x 2.25 Tire

24⁹⁹

The Boulderdash is built for speed and efficiency on hardpack. The tight, small knobs in the center of the tires give excellent traction while reducing rolling resistance. The shoulder knobs increase lateral traction for agressive cornering.

Small knobs for a fast rolling over hardpack conditions
When just a bit of knobby is all that's needed
Excellent cornering properties
Bead Material: Wire
Bsd: 622
Color: Black
Sidewall: Black
Type: Tube
Wheel Size: 29
Width: 2.25

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{"id":9373936091374,"title":"KHS Raptor 20 - 2025","handle":"khs-raptor-20-2025","description":"\u003cp\u003eFrame: 6061 Aluminum Plus w\/Custom Formed T\/T \u0026amp; Replaceable Derailleur Hanger\u003cbr\u003eFork: Rigid Straight Leg\u003cbr\u003eHeadset: Threadless 1-1\/8”\u003cbr\u003eRims: Aluminum, 20” Plus, 32H\u003cbr\u003eHubs, Front: Steel Nutted\u003cbr\u003eHubs, Rear: Steel Nutted\u003cbr\u003eTires: 20 x 2.125”, Knobby\u003cbr\u003eSpokes: 14G Black, 32x32\u003cbr\u003eDerailleur, Front: n\/a\u003cbr\u003eDerailleur, Rear: Shimano Tourney RD-TY300D\u003cbr\u003eShifters: Shimano Revo\u003cbr\u003eChain: KMC Z8.3\u003cbr\u003eCrankset: Aluminum 3-pc 36T w\/Double Chainguard, 140mm\u003cbr\u003eBB: Cartridge Bearing, 68x113.5mm\u003cbr\u003eFreewheel: 14-34T, 7-Speed\u003cbr\u003ePedals: MTB w\/ Boron Axle\u003cbr\u003eSeatpost: Aluminum Micro-Adjust, 27.2x250mm\u003cbr\u003eSaddle: Ultracycle Junior\u003cbr\u003eHandlebar: Aluminum 30mm Rise, 560mm\u003cbr\u003eStem: Aluminum Threadless 4-bolt, 10 Degree, 60mm\u003cbr\u003eGrips: Soft Kraton\u003cbr\u003eBrake Levers: All-Aluminum Linear Pull\u003cbr\u003eBrakes: Aluminum Linear Pull\u003cbr\u003eColor: Bright Orange; Girls: Pop Pink\u003cbr\u003eFrame Size: XXS\/11\u003cbr\u003eExtras: Rear Derailleur Guard\u003c\/p\u003e","published_at":"2026-07-08T21:34:57-07:00","created_at":"2026-07-08T13:22:58-07:00","vendor":"KHS","type":"Bikes - Youth Bike","tags":["bike","Brand_KHS","Color_Orange","Type_Youth"],"price":27997,"price_min":27997,"price_max":27997,"available":true,"price_varies":false,"compare_at_price":37999,"compare_at_price_min":37999,"compare_at_price_max":37999,"compare_at_price_varies":false,"variants":[{"id":48276913193198,"title":"Orange \/ 20 in","option1":"Orange","option2":"20 in","option3":null,"sku":"210000016647","requires_shipping":true,"taxable":true,"featured_image":{"id":47332492378350,"product_id":9373936091374,"position":1,"created_at":"2026-07-08T13:22:57-07:00","updated_at":"2026-07-08T13:22:59-07:00","alt":null,"width":800,"height":800,"src":"\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179","variant_ids":[48276913193198]},"available":true,"name":"KHS Raptor 20 - 2025 - Orange \/ 20 in","public_title":"Orange \/ 20 in","options":["Orange","20 in"],"price":27997,"weight":15876,"compare_at_price":37999,"inventory_quantity":9,"inventory_management":"shopify","inventory_policy":"deny","barcode":"756928947094","featured_media":{"alt":null,"id":39113955180782,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179"],"featured_image":"\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179","options":["Color","Size"],"media":[{"alt":null,"id":39113955180782,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/www.plentyofbikes.com\/cdn\/shop\/files\/uffbftskh2zvtumkg8o9.jpg?v=1783542179","width":800}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eFrame: 6061 Aluminum Plus w\/Custom Formed T\/T \u0026amp; Replaceable Derailleur Hanger\u003cbr\u003eFork: Rigid Straight Leg\u003cbr\u003eHeadset: Threadless 1-1\/8”\u003cbr\u003eRims: Aluminum, 20” Plus, 32H\u003cbr\u003eHubs, Front: Steel Nutted\u003cbr\u003eHubs, Rear: Steel Nutted\u003cbr\u003eTires: 20 x 2.125”, Knobby\u003cbr\u003eSpokes: 14G Black, 32x32\u003cbr\u003eDerailleur, Front: n\/a\u003cbr\u003eDerailleur, Rear: Shimano Tourney RD-TY300D\u003cbr\u003eShifters: Shimano Revo\u003cbr\u003eChain: KMC Z8.3\u003cbr\u003eCrankset: Aluminum 3-pc 36T w\/Double Chainguard, 140mm\u003cbr\u003eBB: Cartridge Bearing, 68x113.5mm\u003cbr\u003eFreewheel: 14-34T, 7-Speed\u003cbr\u003ePedals: MTB w\/ Boron Axle\u003cbr\u003eSeatpost: Aluminum Micro-Adjust, 27.2x250mm\u003cbr\u003eSaddle: Ultracycle Junior\u003cbr\u003eHandlebar: Aluminum 30mm Rise, 560mm\u003cbr\u003eStem: Aluminum Threadless 4-bolt, 10 Degree, 60mm\u003cbr\u003eGrips: Soft Kraton\u003cbr\u003eBrake Levers: All-Aluminum Linear Pull\u003cbr\u003eBrakes: Aluminum Linear Pull\u003cbr\u003eColor: Bright Orange; Girls: Pop Pink\u003cbr\u003eFrame Size: XXS\/11\u003cbr\u003eExtras: Rear Derailleur Guard\u003c\/p\u003e"}

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